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

作　　者：曹岚 柳士林 王瑞 王鹏飞 钱阳 CAO Lan;LIU Shilin;WANG Rui;WANG Pengfei;QIAN Yang(College of Energy and Mechanical Engineering,Shanghai University of Electric Power,Shanghai 200090,China;Shanghai Radio Equipment Research Institute,Shanghai 201109,China)

机构地区：[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

出　　处：《机床与液压》2024年第22期128-132,共5页Machine Tool & Hydraulics

基　　金：上海市高端智能装备首台突破专项(ZB-ZBST-01-20-0090)。

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。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 torsion 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 

分 类 号：TH16[机械工程—机械制造及自动化] TH12