基于物质点法的射弹侵彻双层隔板充液结构的数值模拟  

Numerical Simulation of Projectile Penetrating Double-Layer Plate Liquid-Filled Structure Based on Material Point Method

作　　者：谢桂兰[1] 宋慕清 龚曙光[1] 侯昆 左立来 肖芳昱 XIE Guilan;SONG Muqing;GONG Shuguang;HOU Kun;ZUO Lilai;XIAO Fangyu(School of Mechanical Engineering and Mechanics,Xiangtan University,Xiangtan 411105,Hunan,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：《高压物理学报》2023年第1期117-126,共10页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(51475403)。

摘　　要：在充液结构内设置双层隔板空气夹层可以有效减弱水锤效应带来的危害。为了研究双层隔板间距及位置对水锤效应的影响机理,通过已发表的试验数据对数值模拟方法进行验证后,基于物质点法开展了射弹侵彻双层隔板充液结构的数值模拟,分析了空穴形成过程、射弹剩余速度、固定点液体压力峰值、出入射壁及双隔板壁变形等情况。结果表明:随着双层隔板间距增大,充液结构的变形程度呈先减轻后加重的趋势;双层隔板位置越靠近入射壁,对压力冲击波传导的阻碍作用越强,充液结构的抗侵彻能力越好。The double-layer plate air-container set in the liquid-filled structure can effectively reduce the harm caused by the hydrodynamic ram.In order to study the influence mechanism of the spacing and position of the double-layer plate on the hydrodynamic ram process,the numerical simulation of projectile penetration into the double-layer plate liquid-filled structure was carried out based on the material point method(MPM).The validity of the MPM numerical model is verified by experiments.The cavitation process,the residual velocity of projectile,the peak pressure of liquid at fixed points,the deformation of entry wall,exit wall and the double-layer plates were analyzed.The results show that with the increase of the spacing of the double-layer plate,the deformation of the liquid-filled structure shows a trend of first reducing and then increasing.The closer the position of the double-layer plate to the entry wall,the stronger the obstruction of the transmission of pressure shock wave,and the better the penetration resistance of the liquid-filled structure.

关 键 词：充液结构 侵彻 水锤效应 物质点法 

分 类 号：O385[理学—流体力学] TB122[理学—力学]