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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.1; 20051026-28; Nanjing(CN) >Dynamic Analysis of Deployable Structures with Clearance Connections
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Dynamic Analysis of Deployable Structures with Clearance Connections

机译：具有间隙连接的可部署结构的动态分析

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摘要

Clearances of joints and flexibility of members must be considered in modelling dynamic equations to accurately indicate dynamic performances of deployable structures used for spacecrafts in orbit. In this paper, a circle-cylinder impact pair is presented to describe the spatial revolute joint with clearance. Dynamic formulations of deployable structures are developed using the impact pair model of clearance connections. An example simulation is performed to demonstrate dynamic performances of a typical deployable structure with clearance connections and flexible members. The simulation results show that the dynamic performances of the structure are greatly influenced by the clearance and flexibility of members during its deploying. At beginning, there are bigger contact forces, and then come into inner impacts in the clearance joint continuously. In addition, the joint clearance can cause the disturbance on the deployment angle of the deployable structure and attitude angular velocity of the main body.
机译：在对动力学方程建模时必须考虑关节间隙和构件的柔韧性，以准确指示用于轨道飞行器的可展开结构的动态性能。在本文中，提出了一个圆柱-圆柱碰撞对来描述具有间隙的空间旋转接头。使用间隙连接的碰撞对模型开发了可展开结构的动态公式。执行示例仿真以演示具有间隙连接和柔性构件的典型可展开结构的动态性能。仿真结果表明，结构的动态性能受构件在布置过程中的间隙和柔性的影响很大。刚开始时，接触力更大，然后连续地进入间隙接头的内部冲击。另外，接头间隙会引起对可展开结构的展开角度和主体的姿态角速度的干扰。

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