屈服面是应力六维空间中的五维表面。屈服面通常是凸的,屈服面内部的应力状态是弹性的。当应力状态位于表面上时,材料被称为已经达到其屈服点,并且材料据说已经变成塑性。材料的进一步变形会导致应力状态保持在屈服面上,即使表面的形状和尺寸随着塑性变形的发展而发生变化。这是因为位于屈服面之外的应力状态在速率无关塑性方面是不允许的,尽管不是在某些粘塑性模型中。
The Huang Kezhi-Zhang Yuangao three parameters model is used as yield surface. The relationship between concrete strength and the parameters of the yield surface is derivated and a practical approach is gave to determine the parameters.
模型屈服面采用黄克智—张远高三参数破坏准则,并推导了屈服面三个参数与混凝土强度之间的关系,为屈服面参数的确定提出了一种实用方法。
参考来源 - 混凝土弹塑性本构实用模型研究A two-surface yield criterion is used in the formulation, where the yield surface and the moving of corresponding center are respectively limited.
在该格式中采用两面屈服准则分别控制屈服面及屈服面中心的移动量。
参考来源 - 弯管结构的塑性极限与安定分析·2,447,543篇论文数据,部分数据来源于NoteExpress
提要本文简述了岩土多重屈服面弹塑性模型的基本概念。
The basic conception on geotechnical multiply yield surface elastoplastic model is simply described.
该含微孔材料模型扩充了孙毅的材料模型,其屈服面由膨胀和运动平移组合而成。
The void - containing material model is based on Sun' s material model. Its yield surface consists of a combination of isotropic expansion and kinematic translation.
对封闭型分级单屈服面模型参数中的阶段改变参数和硬化参数的优化进行了研究。
In this paper, optimization of phase change parameter and hardening parameter of closed hierarchical single surface model is studied.
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