Abstract

The propagation of a short compression pulse in heterogeneous targets containing ceramic inclusions of different sizes is studied numerically. The case of a heterogeneous material with inclusions of macroscopic size is considered. It is shown that during propagation in all targets, the initial shape of the shock pulse evolves to a shape corresponding to an elastic stress-strain state in which its amplitude and length do not depend on the distance traveled. It is found that for heterogeneous materials with large inclusions, the rate of decrease in pulse amplitude is greater than for heterogeneous materials with small inclusions.

中文翻译：

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异质弹塑性介质中短压缩脉冲的演变

摘要

数值研究了短压缩脉冲在含有不同尺寸陶瓷夹杂物的异质目标中的传播。考虑了具有宏观尺寸夹杂物的异质材料的情况。结果表明，在所有目标中传播期间，冲击脉冲的初始形状演变为对应于弹性应力应变状态的形状，其中其幅度和长度不取决于行进的距离。发现对于夹杂物大的异质材料，脉冲幅度的下降率大于夹杂物小的异质材料。