挖掘机式冲击器斗杆有限元模态分析  

Finite element modality analysis of the excavator-impactor bucket arm

作　　者：谭明敏[1] 杨务滋[1] 周立强[1] 胡江平[1] 刘明涛[1] 

机构地区：[1]中南大学机电工程学院液压研究所,湖南长沙410083

出　　处：《中南林业科技大学学报》2011年第4期187-191,共5页Journal of Central South University of Forestry & Technology

基　　金：湖南省科技重大专项"大型露天矿山重大采运成套装备研制及产业化"

摘　　要：斗杆是挖掘机式冲击器的主要承载部件之一,工作中斗杆结构处于较高频率振动状态,并承受较大振幅的动载荷,很容易出现疲劳破损的现象。为了分析斗杆结构在冲击工作时的振动特性,利用ANSYS软件对其在自由振动下的模态进行仿真分析,提取前8阶固有频率和对应的振型,对结果进行分析,并通过实验验证仿真结果的正确性,为其后进行动应力、频率匹配、疲劳寿命等研究提供一定的依据。The bucket arm is one of the main bearing parts of the excavator-impactor,it is in high frequency vibration condition and under large amplitude dynamic load when working,so it is easy to be damaged because of fatigue.In order to analyze the vibration characteristic of the excavator-impactor＇ bucket arm,using the finite element analytic software ANSYS,the modality in the free vibration was simulated,and the former 8 ordered inherent frequencies and types of vibration were obtained,then the simulation results were analyzed and the correctness of the simulation results were verified by experiment.The findings provides the theory evidences for the study of dynamic stress,frequency matching、fatigue life and so on.

关 键 词：挖掘机式冲击器 斗杆 有限元 模态分析 

分 类 号：TH113.1[机械工程—机械设计及理论]