作　　者： ; ;

机构地区： 北京理工大学机电学院爆炸科学与技术国家重点实验室

出　　处： 《北京理工大学学报》 2007年第8期666-670,共5页

摘　　要： 针对侵彻体结构动态响应问题,利用有限元程序得到Lagrange六面体常应力积分单元应力张量iσj值,建立了获得侵彻体截面轴力、剪力、弯矩等广义载荷的方法.求解并分析了垂直侵彻和斜侵彻实验的大长细比弹体弹塑性动力响应.结果表明,基于最大惯性载荷的垂直侵彻弹体截面载荷分析对弹体强度设计是安全的,斜侵彻时轴向载荷与侧向载荷的交互作用可采用线性交互作用屈服面求解. In order to study the dynamic response of a projectile during penetration, a new way within the framework of finite element method, based on Lagrange eight-node constant stress hexahedral continuum elements in LS-DYNA, is explored to get the dynamic bending moment, axial force and shear force along the penetrator cross section. The typical distortion mode of a single plastic hinge failure mode coupling axial force with bending moment on oblique penetration are studied. It is a conservative condition for kinetic energy penetrator （KEP） design to analyse the inertia load on normal penetration, and to combine axial load and lateral load on linearity interaction surface.

关 键 词： 侵彻 结构响应 动能弹 塑性铰

领　　域： [兵器科学与技术]