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本文采用变形梯度法及其他方法测定了三种应变状态下板材塑性失稳的规律.实验结果表明:在塑性损伤过程中,应力球张量影响甚大,随着ε_2/ε_1值(代数值)的增大,材料的塑性损伤逐步加快.
In this paper, the deformation instability and other methods are used to determine the plastic instability of the plate under three different strain states. The experimental results show that the stress tensor has a great influence on the ductility of plastic deformation. With ε 2 / ε 1 (algebraic value) Increased, the plastic material damage gradually accelerated.