冲击与循环载荷作用下圆环链疲劳损伤机理研究  

Research on fatigue damage mechanism of ring chain under impact and cyclic loading

作　　者：张强[1,2,3] 李立莹[1] 王海舰[1] 王兆 Zhang Qiang;Li Liying;Wang Haijian;Wang ZhaoI(College of Mechanical Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, China;State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China;National Engineering Research Center of Hydraulic Technology and Equipment, Fuxin 123000, Liaoning, China)

机构地区：[1]辽宁工程技术大学机械工程学院,阜新123000 [2]重庆大学机械传动国家重点实验室,重庆400044 [3]矿山液压技术与装备国家工程研究中心,阜新123000

出　　处：《现代制造工程》2018年第4期22-27,133,共7页Modern Manufacturing Engineering

基　　金：国家自然科学基金项目(51504121);辽宁省自然基金项目(201601324);机械传动国家重点实验室开放基金资助项目(SKLMT-KFKT-201515);中煤集团重点科技项目(13-8)

摘　　要：圆环链作为矿业运输和港口机械的关键部件,疲劳失效是影响其寿命的关键问题。针对圆环链处于冲击载荷与循环载荷作用下的疲劳损伤,利用Workbench仿真软件分析空载启动、卡链和正常运行工况下的圆环链损伤特性,并利用线性累积损伤原理分析疲劳寿命。研究表明,冲击载荷和循环载荷作用下链环接触位置不同,且循环载荷下环肩部疲劳损伤最大,寿命最短。研究结果为优化链环结构、提高链环寿命提供了参考依据。As the important component of mining transport and port machinery, the fatigue failure is the key problem influence on the life of ring chain. According to the fatigue damage of circular chain under the impact load and cyclic load, the Workbench simulation software had been used to analyze the damage characteristics of ring chain under no-load start, card chain and normal operating conditions, and analyzed the fatigue life by the principle of linear cumulative damage. The research shows that the chains have different contact position under different loading condition, and when the cyclic loading the shoulders of ring chain have the maximum fatigue damage and the shortest life. The conclusion provides reference for improving life and optimizing struc- ture of chains.

关 键 词：圆环链 Workbench软件 疲劳损伤 冲击载荷 循环载荷 

分 类 号：TH227[机械工程—机械制造及自动化]