机动武器系统的含间隙动力学研究——中篇:间隙铰模型

DYNAMIC ANALYSIS OF MOBILE WEAPON SYSTEMS WITH CLEARANCES:PART Ⅱ CLEARANCE JOINT MODELS

基于前一部分建立的矢量形式的含摩擦碰撞模型 ,分别建立了旋转间隙铰模型和滑环间隙铰模型。在这两个模型中 ,间隙内的运动状态被描述为统一形式 ,间隙铰对系统的作用被分解为一般几何约束和非线性弹性连接关系两部分 ,分别用约束方程和相对位移—相互作用力关系来描述。此模型不需要对接触状态进行判断 ,便于应用于复杂系统中。文中模型都是在三维空间中构造的 。

Based on the vectorial frictional impact model introduced in part I, models of revolution clearance joint and sliding ring clearance joint are built up respectively. In the models, motion states in clearance are described in a unified form. The influences of the clearance joint are decomposed into two parts, namely geometric constraint and nonlinear elastic connection, which are described by constraint equations and relative displacement force relationships respectively. Contact states need not to be judged in this model. So it is convenient for the analysis of complex systems. Furthermore, the models are derived in three dimensional space, and can be simplified in two dimensional problems.