液压挖掘机斗杆的动态仿真和实验研究  

Dynamic Simulation and Experiment on Bucket Arm of Hydraulic Excavator

作　　者：邢举学 张进生[1,2,3] 余盛[1,2,3] 

机构地区：[1]山东大学机械工程学院,山东济南250061 [2]山东大学建材与建设机械研究中心,山东济南250061 [3]山东大学高效洁净机械制造教育部重点实验室,山东济南250061

出　　处：《机械设计与制造》2016年第6期9-11,共3页Machinery Design & Manufacture

基　　金：建设机械关键技术国家重点实验室开放基金(SKLCM2014-2)

摘　　要：针对液压挖掘机斗杆在工作过程中容易出现开裂、断裂等失效情况,利用Ansys与ADAMS模拟实际工况进行联合动态仿真,获得斗杆在挖掘作业过程中的动态应力变化曲线以及危险点的应力-时间历程,并通过应力测试实验进行验证。由仿真结果可知,斗杆最大应力出现在挖掘深度最大的时刻,危险点位于斗杆液压缸杆与斗杆铰接处的耳板与箱板焊接处。实验表明,仿真结果具有一定的可靠性。研究将为疲劳寿命、可靠性等问题的深入探讨提供数据基础,也可为工程机械关键构件的优化设计提供参考。In order to research fatigue failure such as crack and fracture on bucket avm of hydraulic excavator,dynamic cosimulation based on Ansys and ADAMS was adopted.Through the simulation,dynamic stress distribution curves of the bucket arm and stress-time history curves of the dangerous point were achieved.After that,a stress-test experiment was designed for further verification.The simulation results show that the dangerous point occurs at the welding area nearing the hinged joint while the bucket reaches the deepest position.The experiment shows that the simulation results have a certain degree of accuracy.It can provide data support for further exploration on fatigue reliability,and also necessary reference to optimal design of critical components in the field of engineering machinery.

关 键 词：挖掘机斗杆 联合仿真 ADAMS ANSYS 动态应力 应力实验 

分 类 号：TH16[机械工程—机械制造及自动化] TU621[建筑科学—建筑技术科学]