Prediction of welding distortion and residual stress in a thin plate butt-welded joint

Deng, Dean; Murakawa, Hidekazu

doi:10.1016/j.commatsci.2007.12.006

Cited by 324 publications

(129 citation statements)

References 14 publications

Supporting

Mentioning

124

Contrasting

Unclassified

Order By: Relevance

“…In the thermal analysis, solid-state phase transformation can be neglected because the influence of phase transformation on welding deformation and welding residual stress is insignificant in the lower carbon steel [5][6][7]. The heat from the moving welding arc is applied as a volumetric heat source with a double ellipsoidal distribution, which was proposed by Goldak et al [8] and can be expressed as following equations.…”

Section: Methodsmentioning

confidence: 99%

Discussion and calculation on welding residual longitudinal stress and plastic strain by finite element method

Fang

Zhang

Yang

et al. 2008

Front. Mater. Sci. China

View full text Add to dashboard Cite

In recent years, some researchers have put forward the new viewpoint that the weld is merely formed during the cooling process, not concerned with the heating process. According to this view, it can be concluded that it is not the compressive but the tensile plastic strain that may remain in the weld. To analyze the formation mechanism of the longitudinal residual stress and plastic strain, finite element method (FEM) is employed in this paper to model the welding longitudinal residual stress and plastic strain. The calculation results show that both the residual compressive plastic strain and the tensile stress in the longitudinal direction can be found in the weld.

show abstract

Section: Methodsmentioning

confidence: 99%

Discussion and calculation on welding residual longitudinal stress and plastic strain by finite element method

Fang

Zhang

Yang

et al. 2008

Front. Mater. Sci. China

View full text Add to dashboard Cite

show abstract

“…3D models were adopted, allowing for 3D heat transfer in the material body and on the surface. In order to accurately capture the nonlinear geometrical behavior in the welded plate, the large deformation theory was introduced into the simulation model [9]. The thermomechanical behavior of the weld seam during welding process was simulated by coupled formulation.…”

Section: Fem Modelmentioning

confidence: 99%

Effect of strain hardening and strain softening on welding distortion and residual stress of A7N01-T4 aluminum alloy by simulation analysis

Ding

Liu

et al. 2010

J. Cent. South Univ. Technol.

View full text Add to dashboard Cite

The effect of strain hardening and strain softening behavior of flow stress changing with temperature on welding residual stress, plastic strain and welding distortion of A7N01-T4 aluminum alloy was studied by finite simulation method. The simulation results show that the weld seam undergoes strain hardening in the temperature range of 180−250 ℃, however, it exhibits strain softening at temperature above 250 ℃ during welding heating and cooling process. As a result, the strain hardening and strain softening effects counteract each other, introducing slightly influence on the welding residual stress, residual plastic strain and distortion. The welding longitudinal residual stress was determined by ultrasonic stress measurement method for the flat plates of A7N01-T4 aluminum alloy. The simulation results are well accordant with test ones.

show abstract

“…With the development of welding technology, it is now possible to make complex welded parts with high dimensional precision. However, the welding operation can generate high residual stresses and distortions due to the complex heat flow [1][2] . Combined with applied loads, these residual stresses widely affect the part strength and its fatigue resistance.…”

Section: Introductionmentioning

confidence: 99%

High temperature indentation test to improve constitutive model for welding simulation

Slimani

Rachik

2011

J. Shanghai Jiaotong Univ. (Sci.)

View full text Add to dashboard Cite

The high temperature gradients experienced during fusion welding lead to a local dilatation and metallurgical transformations that generate inhomogeneous plastic deformation, residual stresses and distortions in the welded parts which can affect the service life of the structures. To predict such residual stresses and distortions, finite element analysis is nowadays widely used. This work reports a 3D finite element model for welding simulation. The proposed model is based on semi coupled thermo-mechanical analysis using a double ellipsoidal model of heat source. Firstly, a disk heated in its central zone is investigated. Secondly the validation concerns the simulation of a fully 3D two pass butt weld. The idea in this work concerns the calibration of the heat source parameters with the help of the inverse analysis to improve the heat flow predictions. For the stress analysis, an annealing temperature is introduced to force the material to lose its hardening memory above a given temperature. The predicted residual stresses as well as the predicted distortions are found to be sensitive to the annealing temperature.

show abstract

Prediction of welding distortion and residual stress in a thin plate butt-welded joint

Cited by 324 publications

References 14 publications

Discussion and calculation on welding residual longitudinal stress and plastic strain by finite element method

Discussion and calculation on welding residual longitudinal stress and plastic strain by finite element method

Effect of strain hardening and strain softening on welding distortion and residual stress of A7N01-T4 aluminum alloy by simulation analysis

High temperature indentation test to improve constitutive model for welding simulation

Contact Info

Product

Resources

About