子母弹抛撒过程数值模拟及其试验

Test and Numerical Simulation of the Bullets Spreading Process of a Primary-Secondary Bomb

文中对一个实际子母弹模型抛射子弹的过程进行了试验研究,获得了子弹速度、位移试验数据。同时应用非线性动力有限元程序 LS—DYNA 对其火药燃烧并推动子弹抛撒的过程进行了三维数值模拟,获得了丰富的计算结果。子弹抛撒速度试验结果与数值模拟结果基本一致,表明计算模型与方法是合理的。

A reality primary-secondary bomb is taken as the research object in the paper.In order to study the spreading process of the bullets,an experimental investigation is done on it,and we obtained the main data of the velocity and dis- placement of bullets,etc.At the same time,the process of the powder burning and pushing the bullets is simulated by applying a nonlinearity dynamic finite clement program LS-DYNA,and great quantity data of the bomb is gotten.The velocity of bullet scattering of simulation results is elementarily according with experimental results,it shows the ra- tionality of the simulation computational model and method.