Effect of welding sequence on residual stress and distortion in flat-bar stiffened plates

被引：174

作者：

Gannon, Liam ^{[1
,2
]}

Liu, Yi ^{[2
]}

Pegg, Neil ^{[1
]}

Smith, Malcolm ^{[1
]}

机构：

[1] Def Res & Dev Canada Atlantic, Dartmouth, NS B2Y 3Z7, Canada

[2] Dalhousie Univ, Dept Civil & Resource Engn, Halifax, NS B3J 1Z1, Canada

来源：

MARINE STRUCTURES | 2010年 / 23卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Welding; Residual stress; Distortion; Finite element modeling; Stiffened plates; FINITE-ELEMENT-ANALYSIS; WELDED JOINT; BUTT; PREDICTION; SIMULATION; STRENGTH; STEEL;

D O I：

10.1016/j.marstruc.2010.05.002

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Numerical simulation based on finite element modelling is used to study the influence of welding sequences on the distribution of residual stress and distortion generated when welding a flat-bar stiffener to a steel plate. The simulation consists of sequentially coupled thermal and structural analyses using an element birth and death technique to model the addition of weld metal to the workpiece. The temperature field during welding and the welding-induced residual stress and distortion fields are predicted and results are compared with experimental measurements and analytical predictions. The effect of four welding sequences on the magnitude of residual stress and distortion in both the plate and the stiffener is investigated and their effects on the ultimate strength of the stiffened plate under uniaxial compression are discussed. Appropriate conclusions and recommendations regarding the welding sequence are presented. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.

引用

页码：385 / 404

页数：20