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基于摩擦材料的试验规律和在前人研究成果的基础,提出了广义非线性强度理论,它用一个表达式统一描述π平面及子午面上各种材料的非线性强度特性,包含或逼近了现有的非线性单一强度理论.在主应力空间中,广义非线性强度理论在π平面上的破坏函数为介于SMP准则和Mises准则之间的光滑曲线;在子午面上的破坏函数为幂函数曲线.在基于广义非线性强度理论的变换应力空间内,广义非线性强度理论可以合理地与各种以p和q为应力参量的本构模型相结合,使模型简单地实现三维化.
Based on the experimental rules of friction materials and the basis of previous research results, a generalized nonlinear strength theory is proposed, which uses a single expression to describe the nonlinear strength characteristics of various materials on the π plane and meridional surface in a unified way, including or approaching the present Some non-linear single-strength theory.In the main stress space, the damage function of the generalized nonlinear strength theory in the π-plane is a smooth curve between the SMP criterion and the Mises criterion; the damage function in the meridional plane is a power function In the transformational stress space based on the generalized nonlinear strength theory, the generalized nonlinear strength theory can be rationally combined with various constitutive models with p and q as the stress parameters, so that the model can be easily realized in three dimensions.