Investigation of Material Instability Behaviors Caused by Combined Stress Loadings
Investigation of Material Instability Behaviors Caused by Combined Stress Loadings
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DOI：
10.4028/www.scientific.net/kem.535-536.168
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发表时间：
2013-01
期刊：
影响因子：
--
通讯作者：
W. Ma
中科院分区：
文献类型：
--
作者：
W. Ma
本研究涉及热粘塑性材料塑性流动的稳定性问题。提出了确定不同塑性变形行为之间的失稳起始条件和过渡条件的一般失稳判据。用相图法描述了复杂载荷条件下材料失稳模式的转变，并用数值算例对分析结果进行了验证。
This study involves the stability of plastic flow of thermoviscoplastic materials. The general instability criterion is proposed for determining the onset conditions of instability and the transition conditions among various plastic deformation behaviors. By using the phase diagram method, the transition of material instability modes under complex loading conditions is described and the analytical results are further validated with numerical examples.