连续杆战斗部仿真模型研究

Study on Continuous Rod Warhead Emulation Model

假设在爆炸过程中连续杆战斗部杆环向四周均匀张开,且杆条保持刚直、不变形;杆环断开前将单一杆条的运动分解为质心的平动和杆条绕质心的转动,达到扩张半径时各杆条同时断开;推导了战斗部静态爆炸时杆条中心和交叉点的参数方程;根据导弹飞行速度建立了战斗部动态飞散模型;在目标坐标系中建立了杆环相对飞散模型;利用杆条中心和交叉点的参数方程,可方便地推导链环各点的参数方程;在目标坐标系中,战斗部相对飞散模型联立目标离散单元的平面方程可计算损伤点,依次连线得出损伤轨迹。

Suppose that continuous rod warhead ring stretches equally to every direction and the rods keep stiffness when the warhead explodes. The movement of every rod can be divided into eentroid＇s translational motion and rod＇s rotation before the ring breaks. Every rod breaks away at the same moment when the ring reaches the limit radius. Parametric equations for centroid and intersection of the rod are deduced. According to missile＇s velocity, the warhead dynamic model is set up, In target coordinate, relative model is given. By referring to centroid and intersection＇s movement the parametric equations for every point of the rod ring can be set up. Damage position can be calculated by the simultaneous equations of relative model and target＇s discrete units. Damage track can be obtained by joining the points in turn. Methods for target damage analysis are discussed.