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采用最大熵三维取向分布函数（MEMODF）和简ODF法,按照织构多晶体连续力学法（CMTP法）,遵循Konchend(?)rfer模型,选择非二次型屈服函数来预估多晶体（深冲IF钢板）的塑性应变比R值.预估结果表明,MEMODF法测算值与实测值符合更好.
Using the maximum entropy 3D distribution function (MEMODF) and the simple ODF method, according to the CMTP method and the Konchend (?) Rfer model, the non-quadratic yield function is chosen to predict the polycrystalline Punch IF steel) plastic strain ratio R. Predicted results show that, MEMODF calculated values and measured values in line with better.