arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.00481cond-mat.soft
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老化对材料非线性弹性和记忆形成的影响

Effect of aging on the non-linear elasticity and memory formation in materials

Daniel Hexner, Nidhi Pashine, Andrea J. Liu, Sidney R. Nagel

摘要:

无序的固体通常会随着它们的缓慢老化而改变它们的弹性响应。通过实验和模拟,我们研究了在外加应力下老化无序平面网络如何影响其非线性弹性响应。我们能够显着修改我们的系统在非线性制度的弹性性能。使用模拟,我们研究了两种模型的微观演化的性质,这样的材料,第一个考虑的材料强度的变化,而第二个考虑在微观几何形状的扭曲。这两种模型都捕捉到了实验的不同方面,包括系统老化历史记忆的编码以及对材料非线性弹性特性的巨大影响。我们的研究结果表明,如何老化可以用来创建复杂的弹性行为的非线性制度。

英文摘要:

Disordered solids often change their elastic response as they slowly age. Using experiments and simulations, we study how aging disordered planar networks under an applied stress affects their nonlinear elastic response. We are able to modify dramatically the elastic properties of our systems in the non-linear regime. Using simulations, we study two models for the microscopic evolution of properties of such a material; the first considers changes in the material strength while the second considers distortions in the microscopic geometry. Both models capture different aspects of the experiments including the encoding of memories of the aging history of the system and the dramatic effects on the material's nonlinear elastic properties. Our results demonstrate how aging can be used to create complex elastic behavior in the nonlinear regime.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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