以库仑定律作为强度破坏准则，破碎区边界上的弹性介质和它内部的塑性介质的破坏条件分别采用了不同的主应力函数。
Different functions for principal stress were used as elastic medium failure conditions at the boundary with the crushing zone and plasticity within the latter based on Coulomb rule.
以二维弹性力学自然边界积分方程法为基础建立了二维弹塑性问题的自然边界积分方程。
Based on the natural boundary integral equation for two dimensional elasticity, a corresponding elastoplastic formulation is presented in this paper.
本文采用直接边界元法，研究了土的弹塑性、粘塑性（含蠕变）及温度应力等非弹性状的边界积分方程求解摸式。
With direct B. E. M. the boundary integral equations of soil for elastoplasticity, viscoplasticity cluding creep and temperature stress are researched and soluted.
由于采用弹性理想塑性模型，棘轮应变速率恒定，所得棘轮应变边界偏于安全，可供工程设计参考。
Ratcheting rates are constant due to the EPP model, which yields reasonable conservative ratcheting boundary for engineering design.
由于采用弹性理想塑性模型，棘轮应变速率恒定，所得棘轮应变边界偏于安全，可供工程设计参考。
Ratcheting rates are constant due to the EPP model, which yields reasonable conservative ratcheting boundary for engineering design.
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