火炮结构结合面力学模型研究综述(Ⅱ)

Review and Prospect of the Research on the Gun Structure Joint Surfaces in Mechanical Model(Ⅱ)

火炮结构中的后坐部分与导轨、齿轮与齿弧和回转部分座圈等结合面是影响火炮动力学特性的主要因素。结合面刚度是火炮结构整体刚度的主要组成部分。火炮结构结合面力学模型研究经历了多刚体模型、多柔体模型、以及有限元模型。在火炮有限元模型中,用解析刚性面来模拟身管的接触面,用单元节点耦合来模拟摇架绕耳轴的转动及炮塔相对于底盘绕其回转中心的运动。理论建模与动态试验相结合的系统辨识法是目前行之有效的结合面等效动力参数辨识方法之一。

The gun structure joint surfaces between the recoiling parts and guide way, the main gear of el evating mechanism and cradle sector gear, the upper and lower gear rings of cross-rolling bearings are a important factor influencing the dynamical characteristic of gun structures. The stiffness between joint surfaces are a important parts of the all stiffness for gun structure. The mechanical model of gun struc- ture with joint surfaces have undergone the multibody model, flexible multibody model, and finite element mo del. In finite element model of gun, using analytic rigid surfaces simulates the contact surfaces of tube, Using nodes couping method simulates the rotation of the cradle about trunnion, and motion of turret about chassis. The method of combination of theoretical modeling calculation and dynamic experiment with the conjunction of the pa rameter identification is one of effective methods for dynamical parameter identification on joint surfaces.