典型工况下驱动轮刚柔耦合动态应力及疲劳分析  

RIGID-FLEXIBLE COUPLING DYNAMIC STRESS AND FATIGUE ANALYSIS OF DRIVING WHEELS UNDER TYPICAL WORKING CONDITIONS

作　　者：燕碧娟[1] 张鹤峰 王志霞[1] 寇保福[1] 吴凤彪 YAN BiJuan;ZHANG HeFeng;WANG ZhiXia;KOU BaoFu;WU FengBia(College of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学机械工程学院,太原030024

出　　处：《机械强度》2022年第6期1504-1509,共6页Journal of Mechanical Strength

基　　金：山西省科技重大专项(20181101017);山西省自然科学基金项目(201901D111238)资助。

摘　　要：针对驱动轮轮齿在恶劣工作环境中容易断裂问题,采用RecurDyn软件建立了不同轮齿数驱动轮履带行走机构虚拟样机模型,并通过有限元软件WorkBench将驱动轮轮齿柔性化,建立以驱动轮轮齿为柔性体的刚柔耦合模型。在排岩机典型工况下,对驱动轮进行仿真,得到其与履带板接触载荷、不同齿数驱动轮轮齿应力云图,在其基础上,对九齿驱动轮轮齿进行疲劳寿命分析。结果表明:增加驱动轮轮齿齿数,驱动轮轮齿根部区域最大应力会减小;驱动轮轮齿根部区域为轮齿最为薄弱位置,在转向工况下疲劳寿命最短,研究结果为驱动轮设计优化提供依据。In order to solve the problem that the driving wheel teeth are easy to break in the harsh working environment, this paper used RecurDyn software to establish the virtual prototype model of the driving wheel crawler mechanism with different number of teeth, and used the finite element software WorkBench to make the driving wheel teeth flexible, and established the rigid-flexible coupling model with the driving wheel teeth as the flexible body. Under the typical working conditions of the Spreader, the driving wheel was simulated, and the contact load between the driving wheel and the crawler shoe and the stress nephogram of the driving wheel teeth with different number of teeth are obtained. On this basis, the fatigue life of the nine tooth driving wheel teeth was analyzed. The results show that: with the increase of the number of driving wheel teeth, the maximum stress in the root area of the driving wheel teeth will decrease;the root area of the driving wheel teeth is the weakest position of the teeth, and the fatigue life is the shortest under the steering condition. The research results provide the basis for the design optimization of the driving wheel.

关 键 词：排岩机 驱动轮 刚柔耦合 动态应力 疲劳寿命 

分 类 号：TH213.7[机械工程—机械制造及自动化]