基于物质点法弹丸侵彻靶板的仿真与结构优化  

Simulation and Structural Optimization of Projectile PenetrationTarget Plate Based on Material Point Method

作　　者：谢桂兰[1] 左立来 宋慕清 肖芳昱 侯昆 XIE Guilan;ZUO Lilai;SONG Muqing;XIAO Fangyu;HOU Kun(School of Mechanical Engineering and Mechanics,Xiangtan University,Xiangtan 411105,China)

机构地区：[1]湘潭大学机械工程与力学学院,湖南湘潭411105

出　　处：《弹道学报》2023年第2期46-52,共7页Journal of Ballistics

基　　金：湖南省自然科学基金(2023jj50031)。

摘　　要：为了避免有限元法模拟侵彻时因材料大变形导致的网格畸变及其他问题,基于物质点法建立了弹丸侵彻靶板的数学模型,利用FORTRAN编写程序对案例进行仿真,通过与已有文献中有限元法仿真结果进行了对比和分析,验证了物质点法模拟弹丸侵彻靶板的可行性。通过该方法对弹丸侵彻三层蜂窝夹芯靶板的过程进行了模拟仿真,结果表明同等质量的蜂窝结构三层夹芯靶板的抗侵彻能力显著提高。采用优化后的蜂窝夹芯靶板结构,对相同入射速度的弹丸侵彻不同蜂窝胞元壁厚、不同厚度蜂窝板的蜂窝夹芯靶板进行了模拟,分析蜂窝结构参数对靶板抗侵彻能力的影响规律,发现随着蜂窝胞元壁厚和蜂窝板厚度的增加,蜂窝夹芯靶板的抗侵彻能力先上升后趋于平缓。研究结果为弹丸侵彻蜂窝夹芯靶板的研究提供了新的研究方法,对装甲防护结构的选取和研究提供了一定思路,同时扩展了物质点法的应用范围。In order to avoid the mesh distortion in finite element simulation of penetration and other large deformation problems,numerical models of projectile penetrating three-layer target were established based on material point method.Simulation code was programed by FORTRAN and numerical simulation of projectile penetration into the solid target plate was carried out.The simulation results were compared and verified with the simulation results of finite element method in the existing literature.Then,numerical simulation of projectile penetration into the honeycomb sandwich panels target plate was carried out.It is found that its resistance to penetration ability is significantly improved.Based on the optimized honeycomb sandwich target structure,the penetration of projectile with the same incident velocity into honeycomb sandwich targets with different honeycomb cell wall thickness and honeycomb plate thickness was simulated,and the influence of honeycomb structure parameters on the resistance to penetration ability of the target was analyzed.It is found that with the increasement of thicknesses of honeycomb cell wall and honeycomb plate,the resistance to penetration ability of honeycomb sandwich targets first increases sharply and then flattens.The results provide a new research method for the study of projectile penetration into honeycomb sandwich targets,show a certain idea for the selection and research of armor protective structure.It also expands the application scope of material point method.

关 键 词：物质点法 结构优化 蜂窝夹芯靶板 数值模拟 侵彻 

分 类 号：TJ811[兵器科学与技术—武器系统与运用工程]