Investigating the influence of external restraint on welding distortion in thin-plate bead-on joint by means of numerical simulation and experiment

被引：42

作者：

Deng, Dean ^{[1
,2
]}

Liu, Xiaozhan ^{[1
]}

He, Jing ^{[1
]}

Liang, Wei ^{[3
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, 174 Shazhengjie, Chongqing 400044, Peoples R China

[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

[3] Chongqing Jiaotong Univ, Coll Mechatron & Automot Engn, 66 Xuefu Rd, Chongqing 400074, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2016年 / 82卷 / 5-8期

基金：

中国国家自然科学基金;

关键词：

Welding distortion; External restraint; Finite element; Numerical simulation; FINITE-ELEMENT MODEL; RESIDUAL-STRESS; WELDED-JOINT; FEM; DEFORMATION; PREDICTION; BUTT;

D O I：

10.1007/s00170-015-7413-7

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The main objective of this study is to clarify the influence of external restraint on welding deformation in thin-plate bead-on joint by means of both experiment and numerical simulation. In the current study, an advanced computational approach based on ABAQUS code with considerable moving heat source, material nonlinearity, and geometric nonlinearity was developed to simulate welding-induced distortion in thin-plate joints. Meanwhile, experiments were carried out to measure the out-of-plane deformations in the corresponding mock-ups. Based on the experimental and numerical results, the mechanisms of the out-of-plane deformation in the thin-plate joints were discussed. In addition, the influence of external restraint on welding distortion in thin-plate beadon joints was clarified by means of both numerical simulation and experiment. Both numerical models and experiments show that external restraint can mitigate the magnitude of the final deformation to some extent; however, it is difficult to satisfactorily eliminate welding distortion in the thin-plate joints only by external restraint. The results obtained from this work will be meaningful in understanding the features of welding distortion in thin-plate weldments, and will also be helpful in controlling welding distortion.

引用

页码：1049 / 1062

页数：14

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