摘要
基于文献[1]提出的临界应力－边界单元法，对热接触弹塑性问题的蠕变屈曲现象进行了研究，推导出了用于蠕变分析的接触热弹塑性增量型本构关系及临界应力－边界单元法组合方程格式，给出了根据不同边界条件确定临界时间的耦合方程式，推导了2类方程，对影响临界时间的各因素进行了分析并给出了确定的数学关系。最后计算了3个实例。
In this paper, a contact thermo-elasto-plasticity creep buckling phenomenon proposed by the Critical Stress-Boundary Element Method (CSBEM)according to the literature [1] is studied. The incremental constitutive equation used in creep and the form of Critical Stress-Boundary Element Method are derived. The couple equation determining the time with discretization is derived according to different boundary conditions; two types of equations are constituted; diversified factors influencing critical time are analyzed and mathematics relation was assayed, and finally some examples are shown.
出处
《北方工业大学学报》
1999年第3期19-29,共11页
Journal of North China University of Technology
关键词
蠕变屈曲
本构关系
热应力
接触体
临界应力
creep buckling
constitutive equation
thermal stress
contact bodies
Critical Stress-Boundary Element Method
discretization
