使用数值计算与试验相结合的方法,首先利用非线性显示动力分析有限元程序LS-NYNA,建立了钢破片侵彻靶板的有限元模型,然后设计弹道极限速度(V50)试验,得到大量的试验数据.通过对比模型与试验结果,验证模型计算的准确性.最后利用模型计算结果拟合了弹道极限速度经验公式,并验证了现有的几种不同材料靶板等效厚度公式的准确性.%The process of steel fragments penetrated target was simulated by LS-DYNA program, the ballistic limit velocity experiment( V50) was designed base on it and got large data is gotten, then finished model verification by comparing with test results. The ballistic limit velocity empirical formula is fitted by calculating result of it and the accuracy of equivalent thickness formula of various kinds of target materials is verifed.
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