A significant feature about the application of adhesive joints in various structures is their ability to join dissimilar materials, thus effectively maintaining the structural integrity regardless varying loads. In this paper, the bending collapse behavior of adhesively bonded hat section sandwich beam (HSSB) structures with using of aluminum and steel were investigated. Four configurations of HSSB with different materials for the upper hat beam and lower plate were subjected to quasi-static three-point bending tests as part of the experimental investigation. In comparing the specific absorbed energy (SEA) of the beams, a sample of a hat section sandwich beam with a steel upper hat and an aluminum lower plate had a higher SEA value despite the load-displacement and bending collapse behavior similar to the hat section sandwich beam with a steel upper hat and a steel lower plate. subsequently, a finite element model was developed for bending collapse analysis and a theoretical prediction based on the Kecman model was presented to investigate the hinge moment on HSSB. Based on this, the findings of the numerical study and the predicted theoretical model were in good agreement with the experimental results. The effect of adhesive thickness, the identical mass, and the thickness of the upper hat and lower plate were examined for the purpose of performing an in-depth analysis of the influencing parameters in HSSB structures.

中文翻译：

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结构胶连接同种和异种铝钢帽型夹芯梁弯曲倒塌行为研究：实验、数值和理论研究


粘合接头在各种结构中应用的一个显着特点是它们能够连接不同的材料，从而无论负载如何变化都可以有效地保持结构完整性。本文研究了铝和钢粘合帽型截面夹层梁（HSSB）结构的弯曲倒塌行为。作为实验研究的一部分，对上帽梁和下板采用不同材料的 HSSB 的四种配置进行了准静态三点弯曲测试。在比较梁的比吸收能 (SEA) 时，尽管荷载位移和弯曲倒塌行为与帽型截面相似，但具有钢上帽和铝下板的帽型截面夹层梁样本具有较高的 SEA 值带有钢制上帽和钢制下板的夹层梁。随后，开发了用于弯曲塌陷分析的有限元模型，并提出了基于 Kecman 模型的理论预测来研究 HSSB 上的铰链力矩。基于此，数值研究的结果和预测的理论模型与实验结果非常吻合。考察了粘合剂厚度、相同质量以及上帽和下板厚度的影响，以深入分析HSSB结构的影响参数。