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中文摘要：
从Mohr强度理论出发，对双参数强度理论进行分析，特别是对双参数抛物线型屈服准则进行研究，推导了双参数抛物线强度准则的多种表达形式，分析了该屈服准则在应力空间中的展布特征，证明了双参数抛物线准则在偏平面上分别以两种曲线形式出现，即分段抛物线和分段直线，两者在应力空间中是光滑连接的．两种曲线构成的屈服轨迹都含有角点，对角点进行了修圆处理．通过将该屈服准则嵌入有限元程序，实现了基于双参数抛物线型屈服准则的破坏计算分析．
英文摘要：
Based on Mohr strength theory, the two-parameter strength theory especially the parabolictype yield criterion is analyzed. The different types of expression of the yield criterion are deduced. Its special distribution attributes in principal stress space is clarified. It is proved that the yield criterion consists of parabolic line segments and straight line segments respectively in the principal stress space depending on stress state. The singular points intersected by the lines are modified to fit for FEM calcu- lation. After the yield criterion is adopted into FEM code, the failure calculation based on it is realized.
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