Analysis and simplified model calculation of residual stress in U-rib welding of steel bridge deck

This article examines residual stress generation in U-ribbed steel bridge deck during welding, focusing on post-welding changes in the base material’s residual stress pattern. A thermo-elasto-plastic finite element analysis model was established to conduct numerical simulations of the welding proces...

Full description

Saved in:
Bibliographic Details
Published inAdvances in mechanical engineering Vol. 16; no. 7
Main Authors Gu, Lixiong, Hong, Jieming, Ma, Niujing
Format Journal Article
LanguageEnglish
Published London, England SAGE Publications 01.07.2024
Sage Publications Ltd
SAGE Publishing
Subjects
Accuracy
Base plates
Bridge decks
Compressive properties
Computer simulation
Elastoplasticity
Finite element analysis
Finite element method
Initial conditions
Mathematical analysis
Pattern analysis
Residual stress
Seam welds
Simulation
Steel bridges
Welding
steel structure
Welding residual stress
thermo-elasto-plastic finite element method
blind hole method
simplified stress model
Online AccessGet full text

Cover

More Information
Summary:This article examines residual stress generation in U-ribbed steel bridge deck during welding, focusing on post-welding changes in the base material’s residual stress pattern. A thermo-elasto-plastic finite element analysis model was established to conduct numerical simulations of the welding process, summarizing the residual stress changes near the weld seam, the conclusion was drawn that the tensile and compressive forms of transverse residual stress on the upper and lower surfaces of the base plate were inconsistent. To validate the proposed numerical simulation method’s accuracy, the blind hole method was employed to measure welding-induced residual stress, and finite element analysis calculated calibration coefficients A and B, demonstrating the method’s effectiveness. Comparison of experimental measurements with numerical simulation outcomes validate the finite element simulation method’s accuracy and the adopted methodology’s feasibility. Based on these findings, a piecewise linear fitting approach was adopted to develop a simplified model of welding residual stress. The simplified model provides the initial conditions of residual stress for mechanical calculation of U-rib of the same type.
ISSN:1687-8132
1687-8140
DOI:10.1177/16878132241266457