Numerical simulation of the welding deformation for the side sill of the bogie frame based on local-global method

被引：14

作者：

杨鑫华 ^{[1
]}

王春生 ^{[2
]}

常力 ^{[2
]}

李娅娜 ^{[1
]}

兆文忠 ^{[1
]}

机构：

[1] School of Traffic and Transportation,Dalian Jiaotong University

[2] Changchun Vehicle Railway Cooperation Ltd.

来源：

China Welding | 2007年 / 04期

关键词：

welding deformation; numerical simulation; local-global method;

D O I：

暂无

中图分类号：

TG404 [焊接结构的应力与变形];

学科分类号：

080201 ; 080503 ;

摘要：

Considering the limitation of computational capacity,a new finite element solution is used to simulate the welding deformation of the side sill of railroad car’s bogie frame based on the local-global method.Firstly,a volumetric heat source defined by a double ellipsoid is adopted to simulate the thermal distributions of the arc welding process.And then,the local models extracted from the global model are computed with refined meshes.On these bases,the global distortions of the subject studied are ascertained by transferring the inner forces of computed local models to the global model.It indicates that the local-global method is feasible for simulating the large welded structures by comparing the computed results with the corresponding actual measured values.The work provides basis for optimizing the welding sequence and clamping conditions,and has theoretical values and engineering significance in the integral design,manufacturing technique selection of the bogie frame,as well as other kinds of large welded structures.

引用

页码：11 / 16

页数：6