波纹管式抛撒系统能量转换装置动态响应分析

摘要：采用LS-DYNA非线性动力学有限元程序，对某抛撒机构中的能量转换核心装置—波纹管在均布内压作用下的动态膨胀过程进行了数值分析，获得了波纹管动态响应规律；系统的考察了各种因素对波纹管的变形模式及其应力应变变化规律的影响；模拟了波纹管在内部压力和外围子弹群等共同作用下的耦合变形运动过程，对内弹道抛撒全过程进行了模拟，获得了波纹管耦合变形规律和子弹抛撒特性。模拟计算结果与试验现象基本一致。

Study on dynamic response of corrugated shells shooting structure

Abstract: With the LS-DYNA non-linear and dynamic finite program, the dynamic expansion process of corrugated pipe, the major composition of energy conversion in submunition dispersing, under uniform internal pressure was numerically simulated, and its regular behaviors of dynamic response were achieved. The influences of various factors on deformation law of corrugated pipe are particularly investigated. The rule of coupled deformation for the corrugated pipe, the dispersion rule of submunition under internal pressure and external bullet cluster with the simulation of interior ballistic dispersing process was studied. The result of numerical simulation is elementarily accord with experiments.