本文介绍了确定具有塑性予应变板材后继屈服条件的实验方法。
The experimental method for determine the subsequent yield condition of a sheet with plastic prestrain is introduced.
若规定简单拉伸时两种屈服条件重合，则两者的等效塑性应变增量的相对偏差为15 .5 % ；
Their relative deviation of the equivalent plasticity strain increments was 15.5%, assuming that the two conditions coincide under simple tension;
提出应力屈服条件的应变屈服轨迹，给出了复合胀形极限成形系数的解法；
The strain yield locus of the stress yield criterion was advanced and the strain ellipse method for calculating the limit bulging coefficient was given.
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