【摘要】 本文从弹性力学空间问题相容方程推导出常体力真平面应力情况下各应力分量都为调和函数 .进而得出经典强度理论相当应力都为下调和函数 .通过对经典强度理论相当应力性质的讨论 ,得到在常体力真平面应力情况下 ,相当应力的最大值都在平板的边界上达到 .更多还原

【Abstract】 This paper shows that stress components of true plane-stress with constant body force are harmonic functions from the compatibility in three dimensions and the stress intensities of classical theories of strength are subharmonic. By analyzing the properties of the stress intensities, we conclude that the maximum of the stress intensities under the condition of constant body force and true plane-stress must reach at surface or a plate’s edge.更多还原