多年来人们一直认为侵彻过程中由于撞击产生的高压必然会对靶板产生冲击压缩.但最近的研究表明应力波对材料产生的压缩可分为冲击压缩和等熵压缩,不同的压缩情况对材料的宏观特性如硬度等方面的影响差异很大.以射流侵彻钢板为例,分别对两种不同压缩情况产生的流动应力进行计算,转换成硬度后与试验值相比较,由此确定侵彻过程中应力波对侧壁2 mm后的钢板压缩为等熵压缩,并了解其对材料硬度的影响.
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