Complex Dynamical Behavior in the Shear-Displacement Model for Bulk Metallic Glasses during Plastic Deformation
Complex Dynamical Behavior in the Shear-Displacement Model for Bulk Metallic Glasses during Plastic Deformation
复制标题
大块金属玻璃塑性变形过程中剪切位移模型的复杂动态行为
DOI：
10.1155/2018/7643762
复制
发表时间：
2018-12
期刊：
影响因子：
2.3
通讯作者：
张李盈
中科院分区：
文献类型：
--
作者：
陈存;关绍康;张李盈
本文提出了一种新的剪切位移模型来描述大块非晶合金的塑性变形。分析了剪切带形成过程中的多尺度行为以及动力学随参数的变化。通过多尺度分析和稳定性分析，为实验中从不稳定态到稳定态的转变提供了理论支持。随着小参数由负变正，剪切滑移位移系统的稳定性发生变化，在过渡阶段存在极限环。同时，相图和功率谱也表明，随着参数的变化，存在动力学相变。分析了不同扰动参数下解的复杂性，这与扰动越大解越不规则的事实相吻合。此外，我们还发现解的振幅随着温度的降低而减小，这与锯齿的振幅随着温度的降低而越来越小的实验结果相一致。
In this paper, a fresh shear-displacement model is developed for the plastic deformation of the bulk metallic glasses. The multiscale behavior in the shear banding process and the dynamics transition with the parameters are investigated in analytical form. We present a theoretical support for the transition from unstable states to stable states in the experiment by multiscale analysis and the stability analysis. With the small parameter increasing from negative to positive, the stability of the shear slipping displacement system changes, and there is a limit cycle at the transition stage. Meanwhile, the phase diagram and the power spectrum also suggest that there is dynamics transition with the parameter changing. Moreover, the complexity is analyzed for different disturbance parameters, and it is coincident with the fact that the solution is more irregular for larger disturbance. In addition, we find that the amplitude of solution decreases with the temperature decreasing, which is consistent with the experimental results that the amplitude of the serration is smaller and smaller as the temperature decreases.
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影响因子：
5.2
作者：
HUANG, J;TURCOTTE, DL
通讯作者：
TURCOTTE, DL
严重变形金属玻璃中多个剪切带的分形性质
影响因子：
4
作者：
Wang, W. H.;Sun, B. A.
通讯作者：
Sun, B. A.
影响因子：
3
作者：
R. Burridge;L. Knopoff
通讯作者：
R. Burridge;L. Knopoff
DOI：
10.1136/bmj.323.7325.1375/a
发表时间：
2001-12
期刊：
BMJ : British Medical Journal
影响因子：
--
作者：
K. Barraclough
通讯作者：
K. Barraclough
影响因子：
9.4
作者：
Liu, C.;Roddatis, V.;Maass, R.
通讯作者：
Maass, R.