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A micromagnetic-mechanically coupled phase-field model for fracture and fatigue of magnetostrictive alloys J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-07-06 Shen Sun, Qihua Gong, Yong Ni, Min Yi
Magnetostrictive alloys are usually brittle materials with micromagnetic structures. Their structural reliability and durability depend on the complex micromagnetic-mechanical coupling at smaller length scales encompassing the evolution of micromagnetic structures. Herein we propose a micromagnetic-mechanically coupled phase-field model for fracture and fatigue behavior of magnetostrictive alloys with
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Rainbow trapping of out-of-plane mechanical waves in spatially variant beam lattices J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-07-03 Bastian Telgen, Vignesh Kannan, Jean-Charles Bail, Charles Dorn, Hannah Niese, Dennis M. Kochmann
We numerically and experimentally investigate the propagation of mechanical waves in two-dimensional periodic and spatially graded elastic beam lattices. Experiments on metallic lattices admit the characterization of the linear elastic wave dispersion over a wide range of frequencies, resulting in complete, experimentally-constructed dispersion surfaces in excellent agreement with predictions obtained
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Phase-field ductile fracture simulations of thermal cracking in additive manufacturing J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-07-03 Hui Ruan, Xiang-Long Peng, Yangyiwei Yang, Dietmar Gross, Bai-Xiang Xu
We present a multiphysics phase-field fracture model for thermo-elasto-plastic solids in the context of finite deformation and apply it to simulate the hot cracking phenomenon during metal additive manufacturing. The model is derived in a thermodynamically consistent manner, with the intercoupling mechanisms among elastoplasticity, phase-field crack and heat transfer comprehensively considered. It
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Stretch-independent magnetization in incompressible isotropic hard magnetorheological elastomers J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-07-02 Kostas Danas, Pedro M. Reis
Recent studies on magnetically hard, particle-filled magnetorheological elastomers (-MREs) have revealed their stretch-independent magnetization response after full pre-magnetization. We discuss this phenomenon, focusing on incompressible, isotropic, particle-filled -MREs. We demonstrate that the fully dissipative model of Mukherjee et al. (2021) for arbitrary loads can be reduced, under physically
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A multiscale mechanics model for elastic properties of densified wood J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-07-01 Rui Song, Feng Deng, Xu Liang, Jianwei Song, Shengping Shen, Teng Li
We introduce a multiscale mechanics model for analyzing the elastic properties of super-strong densified wood (DW). Our model incorporates microstructural features such as microfibril angle and densification ratio, along with chemical parameters including degree of polymerization, crystallinity, and density of hydrogen bonds. At the nanoscale and microscale, the elastic properties of cellulose nanofibril
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Minimal actuation and control of a soft hydrogel swimmer from flutter instability J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-07-01 Ariel Surya Boiardi, Giovanni Noselli
Micro-organisms propel themselves in viscous environments by the periodic, nonreciprocal beating of slender appendages known as flagella. Active materials have been widely exploited to mimic this form of locomotion. However, the realization of such coordinated beating in biomimetic flagella requires complex actuation modulated in space and time. We prove through experiments on polyelectrolyte hydrogel
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A multi-horizon fully coupled thermo-mechanical peridynamics J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-28 Changyi Yang, Fan Zhu, Jidong Zhao
This paper presents a fully coupled thermo-mechanical peridynamic model for simulating interactive thermo-mechanical material responses and thermally induced fracturing of solids. A temperature-dependent constitutive model and a deformation-dependent heat conduction model are derived for state-based peridynamic formulation. The dispersion relation and truncation error of the state-based peridynamic
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Peridynamic fracture analysis of film–substrate systems J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-28 Shiyuan Chu, Jinshuai Bai, Zi-Long Zhao, Yan Liu, Dan Huang, Bo Li, Qunyang Li, Xi-Qiao Feng
When subjected to mechanical, thermal, or other loads, film–substrate systems may undergo complex cracking behaviors, which encompass film and substrate cracking, interfacial debonding, and their combinations, exhibiting rich fracture patterns, such as three-dimensional helical cracks. Identifying the mechanisms underlying these fracture phenomena may lead to more advanced strategies for technologically
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A Griffith description of fracture for non-monotonic loading with application to fatigue J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-28 Subhrangsu Saha, John E. Dolbow, Oscar Lopez-Pamies
With the fundamental objective of establishing the universality of the Griffith energy competition to describe the growth of large cracks in solids just under monotonic but under general loading conditions, this paper puts forth a generalization of the classical Griffith energy competition in nominally elastic brittle materials to arbitrary quasistatic loading conditions, which include monotonic and
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Initiation and arrest of cracks from corners in multi-chip semiconductor devices J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-27 Guodong Nian, Yu-Sheng Lin, Jia-Ming Yang, Sammy Hassan, Jyun-Lin Wu, Sherwin Tang, Jun He, Joost J. Vlassak, Zhigang Suo
A contemporary semiconductor device often contains multiple chips. Corners of the chips concentrate stress, and are principal sites to initiate failure. Here we propose to characterize the corners using a double cantilever beam, in which two silicon beams sandwich a row of chips. As the two beams are pulled open, a crack initiates at the corner of a chip, and runs unstably on the interface between
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Nonuniqueness in defining the polarization: Nonlocal surface charges and the electrostatic, energetic, and transport perspectives J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-26 Shoham Sen, Yang Wang, Timothy Breitzman, Kaushik Dayal
Ionic crystals, ranging from dielectrics to solid electrolytes to complex oxides, play a central role in the development of modern technologies for energy storage, sensing, actuation, and other functional applications. Mesoscale descriptions of these crystals are based on the continuum polarization density field to represent the effective physics of charge distribution at the scale of the atomic lattice
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Wrinkle-free membranes through spatioselective exposure J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-24 Guangliang Qi, Heng Gao, Jianyue Wang, Guozhong Zhao, Dzianis Marmysh, Zhan Kang, Kexi Zhu, Ming Li
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Robustness and diversity of disordered structures on sound absorption and deformation resistance J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-23 Yong Liu, Baizhan Xia, Ke Liu, Ye Zhou, Kai Wei
Biostructures exhibit excellent physical properties, such as sound absorption, compression resistance, and fatigue resistance. These properties of the same species are robust in the same environment and diverse in distinct environments. Unlocking the robustness and diversity of biostructural properties will provide high flexibility in the design of engineering structures in different scenarios. However
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Statistical mechanics of active vesicles and the size distribution paradox J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-22 Sreekanth Ramesh, Yashashree Kulkarni
Vesicles are the primary modes of communication and transport in cell biology. Conventional wisdom based on thermodynamic equilibrium says that vesicles should have a certain minimum size and size distribution dictated by their thermal fluctuations. However, there is compelling experimental evidence that vesicles exhibit a vast variety of size distributions depending on their formation process and
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Hyperelasticity of blood clots: Bridging the gap between microscopic and continuum scales J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-20 Nicholas Filla, Beikang Gu, Jixin Hou, Kenan Song, He Li, Ning Liu, Xianqiao Wang
The biomechanical properties of blood clots, which are dictated by their compositions and micro-structures, play a critical role in determining their fates, i.e., occlusion, persistency, or embolization in the human circulatory system. While numerous constitutive models have emerged to describe the biomechanics of blood clots, most of these models have primarily focused on the macroscopic deformation
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Mechanics and thermal analyses of microfluidic nerve-cooler system J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-20 Dongjun Bai, Zichen Zhao, Raudel Avila, Danli Xia, Yonggang Huang, John A. Rogers, Zhaoqian Xie
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A unified discontinuous Galerkin formulation for interfacial multiphysics modeling of thermo-chemically driven fracture J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-18 Daniel Pickard, Raúl Radovitzky
Many engineering and natural materials exhibit coupled thermo-chemo-mechanical phenomena, which can result in embrittlement and fracture. These fractures, in turn, can alter the subsequent thermal, chemical, and mechanical response. We present a theoretical formulation and computational framework for the analysis of thermo-chemically fractured solids, with emphasis on the post-fracture thermal and
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Modified error-in-constitutive-relation (MECR) framework for the characterization of linear viscoelastic solids J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-15 Marc Bonnet, Prasanna Salasiya, Bojan B. Guzina
We develop an error-in-constitutive-relation (ECR) approach toward the full-field characterization of linear viscoelastic solids described within the framework of standard generalized materials. To this end, we formulate the viscoelastic behavior in terms of the (Helmholtz) free energy potential and a dissipation potential. Assuming the availability of full-field interior kinematic data, the constitutive
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Mineral asperities reinforce nacre through interlocking and friction-like sliding J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-15 Hao Li, Kun Geng, Bingzhan Zhu, Qiang Zhang, Yi Wen, Zuoqi Zhang, Yanan Yuan, Huajian Gao
While the surface asperities of mineral platelets are widely believed to play important roles in stiffening, strengthening, and toughening nacre, their effects have not been thoroughly investigated. Here, a computationally efficient bar-spring model is adopted to simulate, as platelets with multiple interfacial asperities slide over each other, the tensile force versus elongation behaviors as well
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Derivation, characterization, and application of complete orthonormal sequences for representing general three-dimensional states of residual stress J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-13 Sankalp Tiwari, Eliot Fried
Residual stresses are self-equilibrated stresses on unloaded bodies. Owing to their complex origins, it is useful to develop functions that can be linearly combined to represent sufficiently regular residual stress field. In this work, we develop orthonormal sequences that span the set of all square-integrable residual stress fields on a given three-dimensional region. These sequences are obtained
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The anomalous crack growth behaviour of an elastic-brittle octet-truss architected solid J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-13 A.J.D. Shaikeea, D. Hahn, V. Gandhi, H. Cui, X. Zheng, V.S. Deshpande
Strongly rising R-curves are observed for octet-truss architected material specimens comprising ∼1 million unit cells and made from an elastic-brittle parent material. The measurements are supported by finite element (FE) calculations where the octet-truss is modelled discretely and show that the pseudo-ductility is not related to the usual toughening mechanisms such as crack bridging or crack-tip
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Modeling stochastic elastic wave diffraction by the tips of randomly rough defects J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-12 Zhengyu Wei, Fan Shi, Zhengjun Wang
Elastic wave scattering from a randomly rough surface of a finite length includes surface reflections and diffractions from the tips. Previous research has focused upon reflection waves with applications in ultrasonic defect detection, seismic wave exploration and phonon boundary transport. However, waves diffracted from the tips/edges have been largely neglected so far for rough defects, despite their
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Characterization of the interface fracture energy dependency on mixed mode fracture between rigid fiber and soft matrix J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-11 P.-Y. Corbel, J. Jumel
An enhanced version of the Rubber Cord Adhesion Inflation Test (RCAIT) has been designed to experimentally assess the internal pressure and cable tension applied to the specimen needed to propagate a crack along the matrix/reinforcement interface. To calculate the critical strain energy release rate, we develop a semi-analytical model describing the deformation of a hyperelastic tube under loading
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Mechanics of magnetic-shape memory polymers J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-10 Lu Lu, Shuai Wu, Ruike Renee Zhao
Magnetic-shape memory polymers (M-SMPs) can not only undergo rapid and reversible deformation in response to magnetic actuation but also lock the actuated shape upon cooling, which has great potential in applications such as soft robotics, active metamaterials, and shape-morphing systems. In this work, we develop a constitutive model for M-SMPs with finite deformation. The constitutive model considers
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Model-guided navigation of magnetic soft guidewire for safe endovascular surgery J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-08 Jiyu Li, Han Chen, Liu Wang
The emergent magnetic soft guidewires (MSGs) that can be remotely navigated by magnetic fields hold great promise in minimally invasive endovascular surgery. However, existing models of MSGs have been limited in practical applications, largely due to insufficient consideration of contacts within actual endovascular settings. In this work, we present a theoretical model incorporating the magneto-mechanical
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Bridging scales with Machine Learning: From first principles statistical mechanics to continuum phase field computations to study order–disorder transitions in Li[formula omitted]CoO[formula omitted] J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-08 M. Faghih Shojaei, J. Holber, S. Das, G.H. Teichert, T. Mueller, L. Hung, V. Gavini, K. Garikipati
LiO (TM=Ni, Co, Mn) forms an important family of cathode materials for Li-ion batteries, whose performance is strongly governed by Li composition-dependent crystal structure and phase stability. Here, we use LiCoO (LCO) as a model system to benchmark a machine learning-enabled framework for bridging scales in materials physics. We focus on two scales: (a) assemblies of thousands of atoms described
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Correlation between synthesis parameters and hyperelasticity of hydrogels: Experimental investigation and theoretical modeling J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-07 Zhicheng Wang, Danming Zhong, Rui Xiao, Shaoxing Qu
The mechanical properties of hydrogels are significantly influenced by synthesis parameters. Although the mapping from the space of synthesis parameters to the space of properties has been investigated experimentally, a quantitative theoretical framework is still lacking. In this work, the effect of synthesis parameters on the hyperelastic behaviors of hydrogels was experimentally studied. Subsequently
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Realization of planar and surface conformal mappings through stress-free growth of hyperelastic plates: Analytical formulas and numerical calculations J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-06 Jiong Wang, Zili Jin, Zhanfeng Li
Conformal mapping is a well-known concept and has a long research history in mathematics. Accompanying the developments of computational science and 3D digital scanning technology, conformal mapping has also found wide applications in geometric modeling, computer graphics, medical imaging and other fields. In the virtual image or animation world, conformal mapping offers a convenient approach to achieve
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Effective boundary conditions for second-order homogenization J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-05 Manon Thbaut, Basile Audoly, Claire Lestringant
Using matched asymptotic expansions, we derive an equivalent bar model for a periodic, one-dimensional lattice made up of linear elastic springs connecting both nearest and next-nearest neighbors. We obtain a strain-gradient model with effective boundary conditions accounting for the boundary layers forming at the endpoints. It is accurate to second order in the scale separation parameter , as shown
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Origami of multi-layered spaced sheets J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-05 Guowei Wayne Tu, Evgueni T. Filipov
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Revealing novel insights into the toughening mechanism of double network hydrogels via uniaxial tensile tests J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-04 Jiapeng You, Zishun Liu
Toughening mechanism of the double network (DN) hydrogel has garnered significant attention in recent years. To interpret this mechanism effectively, studying the fracture toughness of DN gels becomes essential. In DN gels, the apparent fracture toughness is initially decomposed into two components: the dissipated fracture toughness and the intrinsic fracture toughness. However, further decomposition
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Exploiting dynamic bifurcation in elastic ribbons for mode skipping and selection J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-04 Weicheng Huang, Tian Yu, Dominic Vella, K. Jimmy Hsia, Mingchao Liu
In this paper, we systematically study the dynamic snap-through behavior of a pre-deformed elastic ribbon by combining theoretical analysis, discrete numerical simulations, and experiments. By rotating one of its clamped ends with controlled angular speed, we observe two snap-through transition paths among the multiple stable configurations of a ribbon in three-dimensional (3D) space; this is different
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A discrete dislocation analysis of size-dependent plasticity in torsion J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-04 A. Cruzado, M.P. Ariza, A. Needleman, M. Ortiz, A.A. Benzerga
A method for solving three dimensional discrete dislocation plasticity boundary-value problems using a monopole representation of the dislocations is presented. At each time step, the displacement, strain and stress fields in a finite body are obtained by superposition of infinite body dislocation fields and an image field that enforces the boundary conditions. The three dimensional infinite body fields
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Static topological mechanics with local resonance J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-01 Aoxi Wang, Zhiqiang Meng, Chang Qing Chen
The locally resonant band gaps that lie in the vicinity of resonant frequency have been extensively employed in metamaterials for ultralow-frequency wave control, such as vibration isolation, negative refraction, superlensing, and cloaking. The combination of local resonance and band topology allows for the broadband tunable topological boundary modes, ranging from audible to ultrasonic frequencies
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The elastica with pre-stress due to natural curvature J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-01 Sophie Leanza, Ruike Renee Zhao, John W. Hutchinson
The axial buckling behavior is determined for an elastic beam or rod which has a uniform curvature in its natural state, is straightened by pure bending, and clamped at its ends. Buckling can be either identical to the classical two-dimensional behavior determined by Euler, or it can be three-dimensional involving twist and deflection out of the plane of natural curvature depending on the bending and
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The role of adhesion on soft lubrication: A new theory J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-01 Chung-Yuen Hui, Xuemei Xiao, Hao Dong, Anand Jagota
Recent experiments reveal that adhesive interactions can play a key role in causing surface instability in soft lubrication. Instances of instability include fluid entrapment in isolated pockets upon a soft sphere's normal contact with a hard substrate and surface wrinkling of a soft substrate as a hard sphere slides across it. These phenomena underscore a substantial distinction between hard and soft
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Variational operator learning: A unified paradigm marrying training neural operators and solving partial differential equations J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-06-01 Tengfei Xu, Dachuan Liu, Peng Hao, Bo Wang
Neural operators as novel neural architectures for fast approximating solution operators of partial differential equations (PDEs), have shown considerable promise for future scientific computing. However, the mainstream of training neural operators is still data-driven, which needs an expensive ground-truth dataset from various sources (e.g., solving PDEs’ samples with the conventional solvers, real-world
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Generalized continuum theory for nematic elastomers: Non-affine motion and characteristic behavior J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-31 Samuel C. Lamont, Franck J. Vernerey
We develop a physically-motivated mechanical theory for predicting the behavior of nematic elastomers — a subset of liquid crystal elastomers (LCEs). We begin with a statistical description of network geometry that naturally incorporates independent descriptors for the mesogens, which create the nematic phase, and the polymer chains, which are assumed to not deform affinely with global deformations
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The chemo-mechanics of initiation of crack advance in Niobium Tungsten Oxide single crystals due to delithiation J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-31 Shrinidhi S. Pandurangi, Clare P. Grey, Vikram S. Deshpande, Norman A. Fleck
Niobium tungsten oxide (NWO) micron-sized single crystals show promise as the active particles in the anodes of lithium ion batteries due to their fast charge/discharge and high storage capabilities. Within the “block” phases such as NbWO, NbWO and the HNbO polymorph, Li ion diffusion occurs in a unidirectional manner along a single axis of the crystal and lithiation/delithiation results in significant
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Sharp-interface limits for brittle fracture via the inverse-deformation formulation J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-31 Timothy J. Healey, Roberto Paroni, Phoebus Rosakis
We derive sharp-interface models for one-dimensional brittle fracture via the inverse-deformation approach. Methods of -convergence are employed to obtain the singular limits of previously proposed models. The latter feature a local, non-convex stored energy of inverse strain, augmented by small interfacial energy, formulated in terms of the inverse-strain gradient. They predict spontaneous fracture
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On inherent hyperelastic crease J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-31 Siyuan Song, Mrityunjay Kothari, Kyung-Suk Kim
We present analyses of the inherent hyperelastic crease that entails an unstable degenerative singular perturbation field over a uniformly compressed hyperelastic half-space. The analyses reveal asymptotic far-field characteristics of the singular field that bring out admissible incremental elastic deformation mechanisms of the inherent creasing instability typically observed at a compressive strain
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Crossed-state bowing and the strength of binary dislocation junctions J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-31 Isaac Duan, Ryan B. Sills
The strength of binary dislocation junctions in face-centered cubic metals is analyzed via a large set of discrete dislocation dynamics (DDD) simulations and an energy-based line tension model. The simulations reveal that, contrary to the prevailing wisdom, junctions often remain unbroken even after they have fully unzipped, a phenomenon which we call crossed-state bowing. After incorporating crossed-state
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A multiscale dynamic model of cell–substrate interfaces J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-31 Huiyan Liang, Wei Fang, Xi-Qiao Feng
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Bending stiffness of ionically bonded mica multilayers told by its bubbles J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-30 Baowen Li, Wang Tan, Chun Shen, Yuyang Long, Zhida Gao, Jiajun Wang, Wanlin Guo, Jun Yin
Revealing the bending stiffness of layered materials is crucial for guiding their applications with notable out-of-plane deformation, such as in flexible electronics. To this end, dedicated methods have been developed, but usually involving precise manipulation of atomically thin flakes or cross-section characterization with atomic resolution, hindering their widespread adoption. Here, we utilize mica
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Fatigue-resistant adhesion through high energy barriers J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-30 Qi Li, Chao Ma, Yunfeng He, Pengyu Lv, Huiling Duan, Wei Hong
The applications of soft materials in various fields often require interfacial adhesion to sustain prolonged static or cyclic loads, whereas most existing adhesives are susceptible to fatigue failure. Unlike in a quasistatic debonding process, which depends more on the average resistance, the key to preventing fatigue crack propagation is to build up high energy barriers locally. Herein, we invoke
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Mechanics of gradient nanostructured metals J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-30 Yin Zhang, Zhao Cheng, Ting Zhu, Lei Lu
The emergence of heterogeneous nanostructured materials (HNMs) offers exciting opportunities to achieve outstanding mechanical properties. Among these materials, gradient nanotwinned (GNT) Cu is a prominent class of HNMs, demonstrating superior strengths by gaining extra strengths compared to non-gradient counterparts. Its layered gradient structure provides a simplified quasi-one-dimensional model
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A variational phase-field framework for multiphysics modelling of degradation and stress corrosion cracking in biodegradable magnesium alloys J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-29 Dawei Zhang, Songyun Ma, Julia Nachtsheim, Shunqi Zhang, Bernd Markert
Biodegradable magnesium alloys have been developed as promising biomedical materials for temporary implants. To facilitate the development of implant design, it is essential to understand and quantify the corrosion behaviour of magnesium alloys under mixed chemo-mechanical loadings. In this study, a multiphase-field model is proposed based on the variational principle to capture the interactions between
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A kinetic theory for the mechanics and remodeling of transient anisotropic networks J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-29 Franck J. Vernerey, Behnam Rezaei, Samuel C. Lamont
We present a statistically-based theoretical framework to describe the mechanical response of dynamically crosslinked semi-flexible polymer networks undergoing finite deformation. The theory starts from a statistical description, via a distribution function, of the chain conformation and orientation. Assuming a so-called tangent affine deformation of the chains, this distribution is then allowed to
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New insights in the 3-D rheological properties and collagen fibers orientation in murine periodontal ligaments J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-29 Mahmoud Sedky Adly, Richard Younes, Marta Martin, Thierry Cloitre, Afnan Sedky Adly, Ivan Panayotov, Philippe Bousquet, Csilla Gergely, Frederic J.G. Cuisinier, Delphine Carayon, Elias Estephan
The rheological properties of the periodontal ligament are key parameters to understand the homeostatic stability of the tooth supporting apparatus. The objective of this study is to lay new insights on the rheological properties and structural information of different regions in murine periodontal ligament by using atomic force (AFM) and multi-photon microscopy (MPM). A significant variation in elasticity
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A finite geometry, inertia assisted coarsening-to-complexity transition in homogeneous frictional systems J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-28 Thibault Roch, Efim A. Brener, Jean-François Molinari, Eran Bouchbinder
The emergence of statistical complexity in frictional systems (where nonlinearity and dissipation are confined to an interface), manifested in broad distributions of various observables, is not yet understood. We study this problem in velocity-driven, homogeneous (no quenched disorder) unstable frictional systems of height . The latter are described at the continuum scale within a realistic rate-and-state
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Configuration space of helical chiral self-assembly of micro/nano-fibers J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-28 Juntao Chen, Langquan Shui, Tao Ding, Ze Liu
As undertaking various key functions, helical chiral structures are widely presented in nature. Herein, we develop a general theoretical framework to guide the formation of helical chiral structures through self-assembly of micro/nano-fibers driven by adhesion. By analyzing the spiral contact geometric characteristics of multiple fibers and extending the JKR theory, an analytical model for adhesive
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Mechanical characterization and constitutive modeling of additively-manufactured polymeric materials and lattice structures J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-28 Xiao Guo, Erdong Wang, Hang Yang, Wei Zhai
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Corrigenda to “A phase-field model for fatigue crack growth” [J. Mech. Phys. Solids 132 (2019) 103684] and “Phase-field fracture modeling for large structures” [J. Mech. Phys. Solids 171 (2023) 105118] J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-28 Yu-Sheng Lo, Chad M. Landis
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Quantized plastic deformation J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-27 N. Perchikov, L. Truskinovsky
In engineering crystal plasticity inelastic mechanisms correspond to tensorial zero-energy valleys in the space of macroscopic strains. The flat nature of such valleys is in contradiction with the fact that plastic slips, mimicking lattice-invariant shears, are inherently discrete. A reconciliation has recently been achieved in the mesoscopic tensorial model (MTM) of crystal plasticity, which introduces
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Microstructural and mechanistic insights into the Tension–Compression asymmetry of rapidly solidified Fe–Cr alloys: A phase field and strain gradient plasticity study J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-25 Namit Pai, Indradev Samajdar, Anirban Patra
Rapid solidification in Additively Manufactured (AM) metallic materials results in the development of significant microscale internal stresses, which are attributed to the printing induced dislocation substructures. The resulting backstress due to the Geometrically Necessary Dislocations (GNDs) is responsible for the observed Tension–Compression (TC) asymmetry. We propose a combined Phase Field (PF)-Strain
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Impact of out-of-plane deformation on atomic reconstruction in twisted van der Waals bilayers J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-23 Baidu Zhang, Wei Qiu, Xiangbiao Liao, Linghui He, Yong Ni
The effects of out-of-plane deformation on atomic relaxation in twisted van der Waals bilayers are investigated by comprehensive multiscale modeling and simulations. The model integrates the DFT-informed generalized stacking-fault energy for interlayer interaction between layers and the Föppl–von Kármán plate theory for elastic energy in each layer with minimization of the total free energy for atomic
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Phase-field model for 2D cohesive-frictional shear fracture: An energetic formulation J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-22 Ye Feng, Francesco Freddi, Jie Li, Yu E. Ma
This paper presents a phase-field model for cohesive-frictional shear fracture. The model is derived based on two energetic principles: the energy conservation law and a variational inequality of virtual work that serves as a stability condition. We show that all the governing equations for frictional fracture can be obtained from the above two principles, including the equilibrium condition, the phase-field
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Willis dynamic homogenization method for acoustic metamaterials based on multiple scattering theory J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-21 Zhanyu Li, Peixin Han, Gengkai Hu
This paper presents a spatial dispersive Willis dynamic homogenization method for acoustic metamaterials based on multiple scattering theory, which is valid for each physical dimension – 1D, 2D and 3D, and valid for arbitrary inhomogeneities/scatterers – passive or active. The homogenization can be viewed as the monopole and dipole truncation of multiple scattering theory. With the help of layer-doubling
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Energy transmission through and reflection from a layer of random composite J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-21 J.R. Willis
An approximate solution to the title problem for a scalar model elastic medium is obtained via a variational formulation. The layer of random composite is a mixture of two materials both of which have the same elastic modulus but different densities while the adjoining homogeneous half-spaces may have any moduli and densities. No information on the composite is assumed, other than statistical uniformity
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An interpenetrating-network theory of the cytoskeletal networks in living cells J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-05-20 Haiqian Yang, Thomas Henzel, Eric M. Stewart, Ming Guo
Cells undergo dramatic deformations during many physiological and pathological processes such as division and migration, and their mechanical integrity is supported by cytoskeletal networks (i.e. intermediate filaments, F-actin, and microtubules). Recent observations of cytoplasmic microstructure indicate interpenetration among different cytoskeletal networks, and micromechanical experiments have shown