arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0908.4090cond-mat.stat-mechcond-mat.mtrl-sci
收藏

非晶态固体弹塑性的有效温度

The Effective Temperature in Elasto-Plasticity of Amorphous Solids

Laurent Boue', H. G. E. Hentschel, Itamar Procaccia, Ido Regev, Jacques Zylberg

摘要:

在非晶态固体的弹塑性理论中,不同于熔池温度的有效温度$T_{\rm eff}$被认为起着重要的作用。然而,在关于剪切固体的文献中,可测量的$T_{\rm eff}$的定义与波动耗散定理有关,而波动耗散定理只在平衡时才是正确的。在这里,我们介绍了一个自然的定义$T_{\rm eff}$的基础上可测量的结构特征,没有求助于任何有问题的假设。$T_{\rm eff}$的值与表征弹塑性流动的流动应力和平均能量有关。

英文摘要:

An effective temperature $T_{\rm eff}$ which differs from the bath temperature is believed to play an essential role in the theory of elasto-plasticity of amorphous solids. The definition of a measurable $T_{\rm eff}$ in the literature on sheared solids suffers however from being connected to a fluctuation-dissipation theorem which is correct only in equilibrium. Here we introduce a natural definition of $T_{\rm eff}$ based on measurable structural features without recourse to any questionable assumption. The value of $T_{\rm eff}$ is connected, using theory and scaling concepts, to the flow stress and the mean energy that characterize the elasto-plastic flow.

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。

↑