To the same calculation model, adopt homogeneous elastic-plastic model and inhomogeneous elastic damage model separately, the results of calculation under two kinds of situations are compared, the impact of material inhomogeity on stability is analyzed.

• 对同一计算模型，分别采用均质的弹塑性本构模型和非均质的弹性损伤本构模型，对比两种情况下的计算结果，分析了材料非均匀性对稳定性的影响。