摘要
高速侵彻时,弹靶间摩擦力所做功全部转变为热并作用于弹体,假设弹体质量损失来源于弹体表面材料熔化脱落,可以预测弹体总质量损失.结合分析得到的弹靶间摩擦功与压力轴向功关系,通过相应的弹体质量损失分析,获得侵彻过程中弹体表面各点的回退位移(垂直于弹体轴心线方向),实现弹体形状演化的模拟.弹体形状、侵彻深度及质量损失的计算结果均与实验结果基本吻合.
A formula for estimating total mass loss of projectile was developed with the assumptions of the peeling of molten surface in projectile nose as the primary cause of mass loss and the frictional heat totally accepted by projectile.In combination of the linear relationship between friction work and work done by pressure,the receding displacement of every point on projectile surface,which is vertical to the projectile symmetry axis,is obtained based on the formula for estimating total mass loss.Thereby,the variation of projectile shape is simulated.The shape of residual projectile,the depth of penetration（DOP）and projectile mass loss obtained by calculation are in good consistency with the corresponding experimental results.
出处
《力学学报》
EI
CSCD
北大核心
2011年第4期707-715,共9页
Chinese Journal of Theoretical and Applied Mechanics
基金
中国工程物理研究院发展基金重点项目(2009A0201009)
中国工程物理研究院"双百人才"基金(ZX04001)资助
中物院总体工程研究所青年创新基金(10cxj17)~~
关键词
高速侵彻
正侵彻
质量损失
弹头钝化
形状演化
high-speed penetration
normal penetration
mass abrasion
nose blunting
variation of nose shape
