Numerical and experimental investigations on the welding residual stresses and distortions of the short fillet welds in high strength steel plates

Ghafouri Mehran; Ahola Antti; Ahn JosephBjork Timo

首页> 外文期刊>Engineering structures >Numerical and experimental investigations on the welding residual stresses and distortions of the short fillet welds in high strength steel plates

【24h】

Numerical and experimental investigations on the welding residual stresses and distortions of the short fillet welds in high strength steel plates

机译：Numerical and experimental investigations on the welding residual stresses and distortions of the short fillet welds in high strength steel plates

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

The current study investigates the influence of different welding sequences and external constraints on development of welding- induced angular distortion and residual stresses in the short fillet welds made of the high strength steel (HSS), S700, using the finite element (FE) method. Three-dimensional thermo-elastic-plastic FE modeling was performed in the ABAQUS FE software based on the double-ellipsoidal heat source model, temperature-dependent material properties, and considering geometrical non-linearity. The accuracy of the FE models were verified by comparing the simulation results and experimentally measured data. Both the numerical method and measurements show that external constraint has relatively larger influence than welding sequence on the development of angular distortion and the peak magnitude of residual stresses. To determine the significance of short fillet welds in terms of induced distortion and residual stress fields, the results captured by simulation and validated by measurements were compared to those of continuous fillet welds. From a numerical point of view, the results of this study are meaningful to understand the reasonable accuracy required to capture the necessary details of the welding process. From an engineering prospect, the results of this study can be important as they indicate that transverse residual stress fields due to short fillet welds are localized with considerably larger peak magnitudes compared to continuous fillet welds. With respect to the angular distortion, the results of this study show that stiffness of external constraint has a greater impact on prevention of angular distortion in continuous fillet welds than in short fillet welds. In the case of fillet welds with small lengths, beside proper clamping, other deformation control techniques such as pre-alignment of the welded members need to be considered.

著录项

来源
《Engineering structures》 |2022年第1期|114269.1-114269.20|共20页
作者
Ghafouri Mehran; Ahola Antti; Ahn JosephBjork Timo;
展开▼
作者单位

LUT Univ, Sch Energy Syst, Lab Steel Struct, POB 20, Lappeenranta 53851, Finland;

Imperial Coll London, Dept Mech Engn, South Kensington Campus, London SW7 2AZ, England;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Welding simulation; Welding residual stress; High strength steel; Welding distortion; Finite element simulation;

Numerical and experimental investigations on the welding residual stresses and distortions of the short fillet welds in high strength steel plates

摘要

著录项

相关主题

期刊订阅