【摘要】 本文研究了刚性球形弹丸对间隔靶或多层靶的侵彻问题,这些靶由不同的材料构成.给出了弹丸与靶体相互作用的模型,由它计算出了相互作用的表面在每个时间增量时的变化状态,从而可获得靶的阻力,将这些代入到弹丸的运动方程中,即可得到一个完整的弹丸在击穿靶或未击穿靶时的弹道轨迹.其中靶的阻力从广义的Poncelet方程中求得.这样,经典的静力学和动力系数与靶的材料特性就通过弹腔扩张模型联系起来,所得到的实验结果与计算的穿透结果吻合的较好.更多还原

【Abstract】 This article studies the impact problem of a ball rigid projectile at layered orspaced layered targets.These targets are consisted by different material.Aprojectile—target interaction model had been given.It calculates geometrically exactinteraction surfaces at each time increment,which are used to obtain the correspondingtarget resistance force.After substituting these parameters into the equation of motion,afull projectile trajectory through the target,is obtained.Target resistance is obtainedfrom generalized poncelet equation.So,the classical static and dynamic coefficients arelinked to target material properties via a cavity expansion model.A good agreement be-tween observed and computed penetration phenommena was obtained.更多还原