部分均匀荷载作用下圆板塑性极限统一解

Unified Solutions of Plastic Limit of Circular Plate Under Portion Uniform Load

本文采用俞茂宏双剪统一屈服准则求解部分均匀荷载下简支圆板的塑性极限，已有的最大主应力准则、Ｔｒｅｓｃａ准则，Ｍｉｓｅｓ准则的解答均是该解答的特例或线性逼近。该解答可以适合于多种工程材料，具有普遍性和适用性。

In this paper, we adopt Twin Shear Unified Yield Criterion proposed by Prof. Yu Mao hong to find the solution of plastic limit of simply supported circular plate under portion uniform load. The solutions of maximum principal stress criterion, Tresca criterion and Mises criterion are all of its special cases or linear proximity. This solution can be applied to many engineering materials. So it has university and suitability. We can acquire some new benificial knowledge from analysis solutions and diagrams in this paper.