郭禹江1，刘建新1，肖守讷1，刘阳1 ，高震天2
（1.西南交通大学 牵引动力国家重点实验室，四川 成都 610031；2.中国北车集团 大连机车车辆有限公司，辽宁 大连 116022）
摘要：为尽可能反映构架等结构中真实应力，采用Solid 95单元、Solid 45单元、Solid 285单元、Solid 92单元分别用2～20 mm的单元尺寸对T型构件进行网格划分，在相同边界条件下对其进行计算，通过计算结果与理论解的对比分析，提出了构架有限元模型中单元的选择方法，建议使用Solid92单元，规则处选用8～16 mm的单元尺寸，不规则处选用8 mm以下的单元尺寸。分析了某八轴电力机车转向架构架的载荷特点，考虑了与实际条件更加接近的载荷工况，利用大型有限元分析软件ANSYS对该构架进行静强度及疲劳强度仿真计算。研究表明构架静强度足够，疲劳强度满足要求。
关键词：电力机车；构架；有限元；静强度；疲劳强度
中图分类号：U264 文献标识码：A 文章编号：1006－0316 (2012) 12－0006－05
Finite element analysis of eight-axis electric locomotive frame
GUO Yu-jiang1，LIU Jian-xin1，XIAO Shou-ne1，LIU yang1，GAO Zhen-tian2
( 1. Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, China;
2. Dalian Locomotive and Rolling Stock Co., Ltd., CNR Group, Dalian 116022, China )
Abstract：In order to reflect the true stress of the frame structure as far as possible, the Solid95 element, Solid45 element, Solid285 element and Solid92 element were used, T type structure was meshed selecting element size respectively from 2mm to 20mm. the strength was calculated under the same boundary conditions, according to the comparison of the computation results, selection method for framework finite element model was proposed. The use of Solid92 element was recommended, 8 ~ 16 mm element size was selected in the regular place and 8mm following element size was selected in the irregular place; the load characteristics of eight axle bogie frame of electric locomotive were analysed, and the load closer to the actual conditions was considered, the large finite element analysis software ANSYS was used, the frame of static strength and fatigue strength were calculated, Studies show that structure static strength and fatigue strength were enough to meet the requirements .
Key words：electric locomotive；frame；finite element；static strength；fatigue strength
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收稿日期：2012－07－30
基金项目：牵引动力国家重点实验室自主课题（2012TPL_T09）
作者简介：郭禹江（1988－），男，四川乐山人，硕士，主要研究方向为车辆工程、车辆强度；刘建新（1965－），男，工学博士，教授，博士生导师，主要研究方向为机车车辆动力学与结构强度。
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