弹体在具有内摩擦分层介质中垂直侵彻计算方法  

CALCULATION MEDTHOD FOR VERTICAL PENETRATION OF PROJECTILES INTO LAYERED MEDIUM WITH INTRINSIC FRICTION

作　　者：吴华杰[1] 王明洋[1] 王泓 杨元友 

机构地区：[1]解放军理工大学工程兵工程学院,南京210007 [2]总参工程兵设计研究所,北京100850 [3]总政直工部综合局,北京100034

出　　处：《振动与冲击》2007年第9期99-103,共5页Journal of Vibration and Shock

基　　金：教育部新世纪优秀人才支持计划资助项目

摘　　要：将弹体侵彻近区分为破坏区和弹性区,忽略裂纹区影响,利用内摩擦介质侵彻近区运动学方程式,求得弹头阻力。并且通过自由表面边界条件,推导出弹体以残余速度侵彻其他多层介质的阻抗力,得出在垂直情况下,分层介质的侵彻理论公式。当弹体的侵彻速度在一定范围内时,分层介质可以采用波阻抗等效介质方法分析,其结果与目前我国采用的规范计算公式相吻合,使其计算方法建立在较坚实的物理基础上。Using dynamic equations of intrinsic friction medium near the cavity of penetration, dividing the zone near the cavity of penetration into destructive and elastic zones, neglecting influence of crack zone, the resistance force of a warhead is obtained. Under the condition of free surface boundary, the resistance force produced during the projectile penetrating other layered medium with remained velocity is derived, the formulas about the penetration theory for the layered medium under the condition of vertical direction are gained. At the same time, the layered medium can also be analyzed by using the wave resistance and the equivalent medium method. Its results are close to those resulting from the calculating formulas and regulations adopted in our country and it shows the rightness of the proposed method.

关 键 词：分层介质 侵彻深度 弹塑性边界 

分 类 号：O385[理学—流体力学]