A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FEA of residual stress in cruciform welded joint of hollow sectional tubes
https://orcid.org/0000-0001-7467-9552
Abstract Welding is a joining process which is most widely used for permanent joining of two or more components. Welding results in a very complex thermal cycle which results in irreversible elastic plastic deformation and residual stresses in and around heat affected zone (HAZ). Residual stresses are produced in weldment due to mismatching and non-uniform distributions of plastic and thermal strains. The existence of residual stresses in structures affects the stress–strain relationship by lowering the proportional limit and thus reduces the buckling strength. The purpose of the present study is to investigate the residual stresses in heat affected zone of cruciform welded joint of hollow sectional tubes. To precisely capture the residual stresses, computational methodology based on three-dimensional finite element model for the simulation of gas metal arc welding in cruciform welded joint is presented. The complex phenomenon of welding is numerically solved by sequentially coupled transient, non-linear thermo-mechanical analysis. X-ray diffraction experimental method is used to validate the finite element model. The study further altered the welding parameters in order to reduce the residual stresses in the joint thereby improving the strength of the joint.
Highlights Residual stress present in welded joints results in low strength of the structure. FE model was developed for a cruciform joint formed by gas metal arc welding. Finite element analysis was performed for determining strength and residual stress. FE results were found to have good agreement with the experimental data. Welding parameters were optimized to reduce residual stress retaining the strength.
FEA of residual stress in cruciform welded joint of hollow sectional tubes
https://orcid.org/0000-0001-7467-9552
Abstract Welding is a joining process which is most widely used for permanent joining of two or more components. Welding results in a very complex thermal cycle which results in irreversible elastic plastic deformation and residual stresses in and around heat affected zone (HAZ). Residual stresses are produced in weldment due to mismatching and non-uniform distributions of plastic and thermal strains. The existence of residual stresses in structures affects the stress–strain relationship by lowering the proportional limit and thus reduces the buckling strength. The purpose of the present study is to investigate the residual stresses in heat affected zone of cruciform welded joint of hollow sectional tubes. To precisely capture the residual stresses, computational methodology based on three-dimensional finite element model for the simulation of gas metal arc welding in cruciform welded joint is presented. The complex phenomenon of welding is numerically solved by sequentially coupled transient, non-linear thermo-mechanical analysis. X-ray diffraction experimental method is used to validate the finite element model. The study further altered the welding parameters in order to reduce the residual stresses in the joint thereby improving the strength of the joint.
Highlights Residual stress present in welded joints results in low strength of the structure. FE model was developed for a cruciform joint formed by gas metal arc welding. Finite element analysis was performed for determining strength and residual stress. FE results were found to have good agreement with the experimental data. Welding parameters were optimized to reduce residual stress retaining the strength.
FEA of residual stress in cruciform welded joint of hollow sectional tubes
https://orcid.org/0000-0001-7467-9552
Abstract Welding is a joining process which is most widely used for permanent joining of two or more components. Welding results in a very complex thermal cycle which results in irreversible elastic plastic deformation and residual stresses in and around heat affected zone (HAZ). Residual stresses are produced in weldment due to mismatching and non-uniform distributions of plastic and thermal strains. The existence of residual stresses in structures affects the stress–strain relationship by lowering the proportional limit and thus reduces the buckling strength. The purpose of the present study is to investigate the residual stresses in heat affected zone of cruciform welded joint of hollow sectional tubes. To precisely capture the residual stresses, computational methodology based on three-dimensional finite element model for the simulation of gas metal arc welding in cruciform welded joint is presented. The complex phenomenon of welding is numerically solved by sequentially coupled transient, non-linear thermo-mechanical analysis. X-ray diffraction experimental method is used to validate the finite element model. The study further altered the welding parameters in order to reduce the residual stresses in the joint thereby improving the strength of the joint.
Highlights Residual stress present in welded joints results in low strength of the structure. FE model was developed for a cruciform joint formed by gas metal arc welding. Finite element analysis was performed for determining strength and residual stress. FE results were found to have good agreement with the experimental data. Welding parameters were optimized to reduce residual stress retaining the strength.
FEA of residual stress in cruciform welded joint of hollow sectional tubes
Brar, Gurinder Singh (author) / Singh, Chandra Shekhar (author)
Journal of Constructional Steel Research ; 102 ; 44-58
2014-06-27
15 pages
Article (Journal)
Electronic Resource
English
FEA of residual stress in cruciform welded joint of hollow sectional tubes
| Online Contents | 2014
Automated Fatigue Life Assessment for Welded Cruciform Joint Considering Welding Residual Stress
| British Library Online Contents | 2005