CAJ | 학술논문

文中利用通用有限元软件LS-DYNA3D,针对一定装药口径和起爆方式,计算分析了药型罩曲率半径、装药高度、药型罩壁厚和壳体厚度4种因素对LEFP头部速度的影响规律.在此基础上结合LEFP本身特性,以其Vx和Vy速度分量之比为研究指标,应用正交设计方法,针对这4个因素对LEFP成型影响的主次关系进行了分析研究,并对优化前后形成的LEFP进行对比分析.结果表明药型罩壁厚是影响LEFP成型性能的最主要因素,得到了各因素的最优组合,而且优化后的LEFP更具优良的成型性能.
문중이용통용유한원연건LS-DYNA3D,침대일정장약구경화기폭방식,계산분석료약형조곡솔반경、장약고도、약형조벽후화각체후도4충인소대LEFP두부속도적영향규률.재차기출상결합LEFP본신특성,이기Vx화Vy속도분량지비위연구지표,응용정교설계방법,침대저4개인소대LEFP성형영향적주차관계진행료분석연구,병대우화전후형성적LEFP진행대비분석.결과표명약형조벽후시영향LEFP성형성능적최주요인소,득도료각인소적최우조합,이차우화후적LEFP경구우량적성형성능.
Aim at a certain charge diameter and initiation way,the laws of liner curvature radial,the length of the explosive charge,liner thickness and shell thickness four factors affecting the warhead velocity of LEFP are analyzed using explicit finite element program LS-DYNA3D in this paper.Regarding Vx to Vy ratio as index on this basis and combining with characteristic of LEFP,orthogonal design method is applied to analyze the primary secondary relations of four factors,and LEFPs optimized or not are analyzed by contrasting.The results indicate that liner thickness is main influence factor,so an optimum combination of every level of four factors is gained,and the optimized LEFP has excellently forming performance.