A Fictive Stress Model Calculation of Stress-Overshoot: A Nonlinear Viscoelastic Behavior in Metallic Glass
A Fictive Stress Model Calculation of Stress-Overshoot: A Nonlinear Viscoelastic Behavior in Metallic Glass
复制标题
应力过冲的虚构应力模型计算：金属玻璃中的非线性粘弹性行为
DOI：
10.1143/jjap.39.1808
复制
发表时间：
2000
影响因子：
1.5
通讯作者：
A. Inoue
中科院分区：
文献类型：
--
作者：
Ho;H. Kato;A. Inoue
基于应力诱导结构松弛假设和虚拟应力的概念，提出了玻璃材料非线性粘弹性行为的模型。对金属玻璃中观察到的应力过冲现象进行了模型计算。该模型计算再现了Pd40Ni10Cu30P20玻璃的实验结果相当不错，特别是，应力过冲行为的发展与应变速率增加和温度降低。此外，该模型揭示了应力过冲和下冲的振荡行为，这在以前的金属玻璃中没有报道，但已在许多聚合物溶液中观察到。
A model, based on the hypothesis of stress-induced structural relaxation and a concept of fictive stress, is proposed for nonlinear viscoelastic behavior in glassy materials. A model calculation has been carried out on the stress-overshoot phenomenon observed in metallic glasses. The model calculation reproduces the experimental results of a Pd40Ni10Cu30P20 glass fairly well, in particular, the development of stress-overshoot behavior with increasing strain rate and lowered temperature. In addition, the model reveals a stress-overshoot and -undershoot oscillatory behavior which has not been reported previously in metallic glasses, but has been observed in many polymer solutions.