动载荷下的V锁式接链环力学特性研究  

Study of mechanical properties of V-lock chain ring under dynamic load

作　　者：张强[1,2,3] 付云飞[1] 聂国强 

机构地区：[1]辽宁工程技术大学机械工程学院,辽宁阜新123000 [2]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116023 [3]中国煤矿机械装备有限责任公司,北京100011

出　　处：《机械设计》2013年第11期13-16,共4页Journal of Machine Design

基　　金：工业装备结构分析国家重点实验室开放基金资助项目(GZ1107);辽宁省教育厅科研资助项目(L2011050)

摘　　要：为了研究V锁式接链环在循环载荷和冲击载荷作用下所表现的力学性能,采用ANSYS Workbench和LS-DYNA建立接链环的动力学模型,并对接链环进行有限元分析。通过分析得到了循环载荷作用下的接链环各组成等效交变应力云图和寿命云图,以及冲击载荷作用下的接链环各组成等效应力云图和冲击时的接触应力曲线。结果表明:接链环在循环载荷作用下同时存在着低周期疲劳和高周期疲劳,低周期疲劳区域的最小寿命为448次,高周期疲劳区域的最小寿命在20 000次循环以上,但低周期疲劳区域范围很小;冲击载荷作用下接链环所受的最大应力约为450 MPa,小于其屈服极限,并不能造成破坏,但冲击过程相当于一个阻尼振动过程,反复的振动相当于疲劳作用。To study the mechanical properties of V-lock chain ring under the cyclic loading and the impact load,ANSYS Workbench and LS-DYNA are used to establish the dynamic model of the link chain,and the finite element analysis of the model is carried out.Cloud pictures of the equivalent alternating stress and the life of the link chain under the cyclic loading are obtained,and the cloud picture of the equivalent stress and the curve of the contact impact stress of the link chain are obtained.The results show that there exist the low cycle fatigue and high cycle fatigue in the link chain.The minimum life of the low cycle fatigue region is 448 cycles,and the minimum life of the high cycle fatigue region is above20000 cycles.The range of the low cycle fatigue region is extremely small.The maximum stress of the link chain under the impact load is about 450 MPa which is less than the yield limit.The impact load can＇t cause destroying.The impact process is equal to the damped vibration process,and the repeated vibration is equal to the fatigue effect.

关 键 词：循环载荷 冲击载荷 V锁式接链环 力学性能 阻尼振动 

分 类 号：TD528[矿业工程—矿山机电]