弹丸发射时装填物的瞬态响应分析

TRANSIENT RESPONSE OF THE FILLER IN A PROJECTILE UNDER FIRING CONDITIONS

研究了弹丸发射时装填物的动力响应和装填物与弹体的相互作用,建立了更精确的计算模型,即装填物承受刚性弹壁的单向法向约束,装填物的性质分别由积分型线粘弹性本构方程和线弹性本构方程表示。文中考虑了材料粘弹性、边界滑动和边界摩擦力等的影响,最后用有限元法进行了实例分析。

In this paper, dynamic response of the filler and reaction between the filler and projectile body are investigated. A more precise model for the calculation is set up in which the filler is under unilateral normal constraint from the rigid projectile wall and the property of the filler is expressed by linear viscoelastic- or linear elasti-constitutive laws. Viscoelasticity of the material, relative slide of the filler and the friction between the filler and the projectile body, etc., are considered. Dynamic and quasi-static solutions are finally evaluated through FEM.