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平头弹丸正撞击下延性金属靶板的破坏模式

DOI: 10.11858/gywlxb.2007.02.007, PP. 157-164

Keywords: 延性金属靶板,平头弹丸,破坏模式,简单剪切破坏,绝热剪切冲塞,弹道极限

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Abstract:

对延性金属靶板在刚性平头弹丸正撞击下的破坏模式进行了研究。一般而言,延性金属靶板的破坏模式可以分为两种:带有总体变形的局部简单剪切破坏和局部化的绝热剪切冲塞破坏。首先基于Bai-Johnson热塑性本构关系建立了一个局部化的绝热剪切冲塞模型,然后结合描述带有总体变形的局部简单剪切破坏的Wen-Jones模型,找出了两种模型之间转化的临界条件。理论预测与文献中的实验结果吻合得很好。

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