基于刚柔耦合的舱门扭力杆机构疲劳寿命分析
Fatigue Life Analysis of Hatch Torsion Bar Mechanism Based on Rigid-Flexible Coupling
曹岚 1柳士林 1王瑞 2王鹏飞 2钱阳2
作者信息
- 1. 上海电力大学能源与机械工程学院,上海 200090
- 2. 上海无线电设备研究所,上海 201109
- 折叠
摘要
针对舱门模型精确性低、扭力杆机构开发周期长、理论分析结果单一等问题,建立舱门的刚柔耦合动力学模型,提出有限元分析和多体动力学理论相结合的疲劳寿命预测方法,并根据扭力杆材料的疲劳特性,利用nCode软件对扭力杆进行疲劳寿命评估,有效解决舱门机构疲劳试验周期长、费用高等问题.同时搭建舱门实物平台,通过试验为所提方法提供数据支持.结果表明:扭力杆机构危险部位在两侧的薄弱处,舱门结构满足设计要求,所提方法可有效缩短舱门结构开发设计周期,优化舱门结构.
Abstract
In view of the problem of low hatch model accuracy,long development cycle of torsion bar mechanism and single result of the theoretical analysis,the rigid-flexible coupling dynamics model of the hatch was established,the method of fatigue life prediction combined with finite element analysis and multi-body dynamics theory was proposed.According to the fatigue characteristics of the tor-sion bar material,the fatigue life of the torsion bar was evaluated by using the nCode software,by which the fatigue test cycle of the hatch mechanism could be effectively shortened,and the problems of the long fatigue test cycle and high cost of the hatch mechanism were solved.At the same time,a physical platform for the hatch was built,and data support was provided for the proposed method through experiments.The results show that the dangerous parts of the torsion bar mechanism are at the weak points on both sides,the hatch structure meets the design requirements,and the method can be used to effectively shorten the development and design cycle of the hatch structure and the hatch structure is optimized.
关键词
刚柔耦合/扭力杆机构/动力学仿真/疲劳寿命分析Key words
rigid-flexible coupling/torsion bar mechanism/dynamic simulation/fatigue life analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据