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, biostructures are usually disordered in their geometries, and the complexity of geometric disorders creates an obstacle for scientists to understand the mechanisms behind the robustness and diversity of biostructures. Here, the acoustic and mechanical properties of artificially disordered structures are utilized to reproduce such robustness and diversity. We unravel that the robustness and diversity of probabilistically physical properties are determined by the statistical characteristics of the geometries of disordered structures and reveal that the acoustic absorptions of disordered structures are highly consistent even under serious loading. This work demonstrates a new approach for the design of disordered engineering structures whose properties are robustness and diversity against aggressive environments.

中文翻译：

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无序结构对吸声和变形抗力的鲁棒性和多样性


生物结构表现出优异的物理性能，例如吸声、抗压和抗疲劳性。同一物种的这些特性在相同的环境中是稳健的，而在不同的环境中是不同的。释放生物结构特性的稳健性和多样性将为不同情况下的工程结构设计提供高度灵活性。然而，生物结构的几何形状通常是无序的，几何无序的复杂性为科学家理解生物结构的稳健性和多样性背后的机制造成了障碍。在这里，利用人为无序结构的声学和机械特性来再现这种鲁棒性和多样性。我们揭示了概率物理特性的鲁棒性和多样性是由无序结构的几何统计特征决定的，并揭示了即使在严重载荷下，无序结构的声吸收也高度一致。这项工作展示了一种设计无序工程结构的新方法，其特性是针对恶劣环境的鲁棒性和多样性。