虚拟样机技术在提升机疲劳寿命分析中的应用  

Application of Virtual Prototype Technology in the Analysis of Hoist Fatigue Life

作　　者：刘义 陈国定[2] LIU Yi;CHEN Guo-ding(Changzhou Institute of Mechatronic Technology,Changzhou Jiangsu 213164,China;School of Mechanical Engineering,Northwestern Polytechnical University,Xian Shanxi 710072,China)

机构地区：[1]常州机电职业技术学院,江苏常州213164 [2]西北工业大学机电学院,陕西西安710072

出　　处：《计算机仿真》2022年第4期392-397,共6页Computer Simulation

基　　金：国家重点基础研究发展计划(973计划)资助(2014CB049400);江苏教师专业带头人高端研修(2019GRGDYX078)。

摘　　要：摩擦提升机的主轴以及卷筒的疲劳损坏是摩擦提升机最为重要的故障方式,因此摩擦提升机的主轴以及卷筒的疲劳设计是其重要的设计内容之一。传统的采用常幅对主轴和卷筒进行疲劳分析同其在实际工况中的情况有较大的的出入,实用性受到一定的限制。利用虚拟样机建模技术,综合利用了模态柔性体和有限元柔性体两种建模方法,构造摩擦提升机虚拟样机计算模型,能够比较真实的反应摩擦提升机的工作动态特性,得到摩擦提升机完整工作循环的动应力响应,并在此基础上完成主轴和卷筒的疲劳寿命分析。利用此种方法,解决了摩擦提升结构在动载作用下的动应力响应的计算问题;因此,结合虚拟样机技术对摩擦提升机进行疲劳寿命估算,其实用性更好。The fatigue damage of the main shaft and drum of friction hoist is the most important failure mode of friction hoist, so the fatigue design of the main shaft and drum of friction hoist is one of its important design contents.The traditional fatigue analysis of the main shaft and the drum with constant amplitude is different from the actual working condition, so its practicability is limited. By using the virtual prototype modeling technology, two modeling methods, modal flexible body and finite element flexible body, are synthetically used to construct the virtual prototype calculation model of friction hoist, which can compare the real working dynamic characteristics of friction hoist, get the dynamic stress response of the complete working cycle of friction hoist, and complete the fatigue life analysis of the main shaft and drum on this basis. By using this method, the calculation of the dynamic stress response of the friction hoisting structure under the dynamic load is solved;therefore, the fatigue life of the friction hoist is estimated with the virtual prototype technology, which has better practicability.

关 键 词：摩擦提升机 柔性体 多体动力学 疲劳 

分 类 号：TD453[矿业工程—矿山机电]