某典型折叠机构的磨损寿命研究及优化

Study and Optimization on Typical Folding Mechanism's Wear Life

针对航空航天柔性机构具有复杂非线性的特点,提出一种在多软件平台下建立柔性机构模型并进行运动学仿真的方法。对某典型折叠机构进行参数化建模及运动学分析,并采用不同可靠性分析方法对折叠机构进行可靠性分析和磨损寿命分析。最后对机构进行磨损寿命优化。优化结果显示机构最大应力水平显著降低,磨损寿命显著提高。

A method of modeling and kinematics simulating of a typical flexible folding mechanism in multisoftware platform was proposed, which aimed at its complex nonlinear dynamic characters. Based on this method, parameterized modeling and kinematics simulation of a typical folding mechanism was put forward firstly, and then the reliability analysis and wear lifetime analysis of folding mechanism were studied through different reliability analysis methods. Finally, the wear life of such mechanism was optimized. The optimization results show that the maximum stress level is decreased and the wear life is increased significantly.