高速破片对半无限厚钢靶的侵彻试验研究  

Experimental study on penetration of semi-infinite steel targets under the impact of high speed fragments

作　　者：侯海量[1] 朱锡[1] 梅志远[1] 谷美邦[1] 王晓强[1] 

机构地区：[1]海军工程大学船舶与海洋工程系,湖北武汉430033

出　　处：《兵器材料科学与工程》2006年第1期39-42,共4页Ordnance Material Science and Engineering

摘　　要：进行了典型高速破片对半无限厚45号钢靶侵彻试验,并根据Tate-Alekseevskii弹体侵彻模型及理想刚塑性材料模型假定,推导了高速破片冲击下,半无限厚钢靶的侵彻深度计算公式,提出了靶体的抗侵彻阻力以及靶体材料动态屈服强度的计算方法,计算侵彻深度与试验结果吻合良好。结果表明:半无限厚45号钢靶的抗侵彻阻力约为5.246倍静态屈服强度;在平面应变侵彻条件下,当弹速为500～1300m/s时,45号钢的动态屈服强度约为静态屈服强度的2.998倍;弹体的临界侵彻速度为319.9m/s,冲击速度小于临界侵彻速度时不会发生侵彻。The experimental study was carried out on penetration of semi-infinite 45 steel targets under the impact of high speed fragments. The formula to calculate penetration depth was ,obtained. and the method to calculate penetration resistance and the dynamic yield strength of targets were propused. The calculation results of penetration depth agree well with those of experiment. The results shnw thai the penetrition resistance of semi-infinite 45 steel targets is 5.246 limes that of the statie yield strength. The dynamic yield strength of 45 steel is 2.998 times that of the styptic yiehl strength under plain strain penetration, when the impact velocity is 500-1 300 m/s, The critical penetration velocity of high speed fragments is 319.9 m/s, less than w-hich, penetration will not occur.

关 键 词：高速碰撞动力学 高速破片 偿彻试验 冲击 动态屈服强度 应变率 45号钢 

分 类 号：O385[理学—流体力学]