自卸汽车举升三角臂结构强度有限元及试验分析  

Finite Element and Experimental Analysis of Strength of Dump Truck Lifting Triangle Arm

作　　者：苑伍德 罗昆 杨成伦 刘大维[1] YUAN Wude;LUO Kun;YANG Chenglun;LIU Dawei(School of Electromechanic Engineering,Qingdao University,Qingdao 266071,China;China National Heavy Duty Truck Group Qingdao Heavy Industry Co,Ltd,Qingdao 266031,China)

机构地区：[1]青岛大学机电工程学院,山东青岛266071 [2]中国重汽集团青岛重工有限公司,山东青岛266031

出　　处：《青岛大学学报（工程技术版）》2020年第4期37-42,共6页Journal of Qingdao University(Engineering & Technology Edition)

基　　金：山东省重点研发计划(2017CXGC0510)。

摘　　要：为进行自卸汽车举升机构三角臂的结构强度分析,本文以某重型自卸汽车T式举升机构为例,运用多体动力学分析软件Adams,建立举升机构虚拟样机模型,得到举升机构三角臂各铰接点位置的作用力,并应用HyperMesh有限元分析软件,建立以板壳单元为基本单元的三角臂结构有限元模型,分析了最大载荷工况下的结构强度。为验证所建有限元模型的正确性,建立举升结构应变电测试验系统,提取三角臂关键点位的等效应力。研究结果表明,有限元计算结果与试验测试结果相比,关键点位的相对误差为3.42%~15.55%,表明该三角臂有限元模型及分析方法是正确可行的。该研究为举升机构的强度分析和结构的进一步改进提供了参考依据。In order to analyze the structural strength of the triangular arm of a dump truck lifting mechanism,this paper takes a heavy dump truck T-lifting mechanism as an example and uses the multi-body dynamics analysis software Adams to establish a virtual prototype model of the lifting mechanism to obtain the lift.The force of each hinge point of the triangle arm of the mechanism is applied to the HyperMesh finite element analysis software to establish the finite element model of the triangle arm structure with the plate and shell element as the basic unit,and the structural strength under the maximum load condition is analyzed.In order to verify the correctness of the constructed finite element model,a strain electrical test system of the lifting structure is established,and the equivalent stress of the key points of the triangular arm is extracted.The research results show that the relative error of the key points between the finite element calculation results and the experimental test results is 3.42%~15.55%,which indicates that the established finite element model and analysis method of the triangular arm are correct and feasible.This research provides a reference for the strength analysis and structural improvement of the lifting mechanism.

关 键 词：自卸汽车 举升机构 三角臂 有限元 应力试验 

分 类 号：U469.4[机械工程—车辆工程] U463.92[交通运输工程—载运工具运用工程]