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基于Lode参数给出了广义拉压及纯剪应力状态的概念,并表明在π平面或偏平面内Lode参数(Lode角)可描述简单加载条件下的应力路径。进一步基于能量途径给出了与M-C屈服准则相匹配的D-P系列屈服准则的参数转换关系。给出了D-P系列准则特征Lode角(特征应力路径)的概念,并分析了其多值性。最后对D-P系列准则进行了简单的误差分析。
Based on the Lode parameter, the concept of generalized tension-compression and pure shear stress states is given. It is also shown that the Lode angle (Lode angle) can describe the stress path under simple loading conditions in the π-plane or in-plane. Based on the energy path, the parameter transformation relationship of D-P series yielding criterion matching M-C yield criterion is given. The concept of characteristic Lode angle (characteristic stress path) of D-P series criterion is given, and its multi-value is analyzed. Finally, the D-P series of guidelines for a simple error analysis.