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本文采用Malvern的线性超应力模型和Wood等人的特征线处理方法得到加载区一维塑性波的数值解并与Bell的实验进行了较为广泛的比较。所得结果与实验位符合较好。本文还证实了线性超应力模型可以予测实验条件下等应变区的存在,给出了铝和铜的速率灵敏系数K的建议值,讨论了铝的K值的普适性等问题。
In this paper, Malvern’s linear super-stress model and Wood et al.’s characteristic line processing method are used to obtain the numerical solution of one-dimensional plasticity waves in the loading area and compare it with Bell’s experiment extensively. The results obtained are in good agreement with the experimental positions. This paper also confirms that the linear strain model can predict the presence of constant strain region under experimental conditions. The suggested values of the rate sensitivity K for aluminum and copper are given, and the general applicability of the K value of aluminum is discussed.