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广义双剪应力准则角隅模型

SMOOTH RIDGE MODEL OF GENERALIZED TWIN SHEAR STRESS CRITERION

  • 摘要: 本文将广义双剪应力准则变换为π平面和静水应力轴的柱坐标方程,然后将其角隅光滑化,得到了新的光滑、外凸的广义双剪应力准则角隅模型,研究结果表明,近年来作为光滑化Mohr-Coulomb理论提出的各种角隅模型,实际上并不是光滑化的Mohr-Coulomb理论,而是光滑化的广义双剪应力理论。

     

    Abstract: Based on the twin shear stress theory, a new smooth ridge corner model of generalized twin shear stress criterion is proposed in this paper. This new smooth ridge model gives a close estimate of experimental data, reflects the influence of intermediate principal stress and the required characteristics concerning smoothness, convexity, symmetry, etc. The results of researches show that the three parameter criterion of William-Warnke and some other criteria are not a smooth Mohr-Coulomb surface, but a smooth ...

     

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