A one-dimensional model for the prediction of residual stress and its relief in welded plates

Cañas, J. A.; Picón, Rafael; Parı́s, F.; Rio, J.I. Del

doi:10.1016/0020-7403(95)00083-6

Cited by 13 publications

(14 citation statements)

References 12 publications

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“…10(a). The thermal gradient of the weld was approximated by an exponential temperature decay as a function of distance from the fusion line (Canas et al, 1996;Storesund and Tu, 1995). The two arbitrary thermal constant in the equation can be determined by the outermost position of the visible heat affected zone, which is known to reach a peak temperature just below the pearlite to austenite transformation temperature (i.e.…”

Section: Initial Thermal Conditions By Haz Approximationmentioning

confidence: 99%

“…Moreover, other research has revealed that certain post-weldheating techniques may lower residual stresses in one planar direction (vertical direction) but actually raise tensile residual stresses in the other planar direction (longitudinal direction) and cause worsening of the weld material properties (Canas et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

“…Attempts to examine the behaviour of residual stresses in welds or in manufactured steel components by rapid heat treatments such as induction (Mansouri et al, 2004), rapid furnace (Vershinin, 1972) and flame heating (Canas et al, 1996) are limited, with little information on the effect of such treatments on the microstructural and hardness characteristics. Moreover, other research has revealed that certain post-weldheating techniques may lower residual stresses in one planar direction (vertical direction) but actually raise tensile residual stresses in the other planar direction (longitudinal direction) and cause worsening of the weld material properties (Canas et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental and numerical investigations: Alleviating tensile residual stresses in flash-butt welds by localised rapid post-weld heat treatment

Tawfik¹,

Mutton²,

Chiu³

2008

Journal of Materials Processing Technology

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Section: Initial Thermal Conditions By Haz Approximationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and numerical investigations: Alleviating tensile residual stresses in flash-butt welds by localised rapid post-weld heat treatment

Tawfik¹,

Mutton²,

Chiu³

2008

Journal of Materials Processing Technology

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“…For this purpose, laser treatments appear promising because they allow a high quantity of power density to be concentrated within a reduced area. Stress relief by local laser annealing can be modelled by assuming an elasto‐plastic behaviour and temperature‐dependent material properties . A lumped parameter model can be developed to predict the level of reduced strain .…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Local Stress Relaxation by Laser Annealing and X‐ray Measurement

Barile

Casavola

Pappalettera

et al. 2013

Strain

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Most manufacturing processes generate residual stresses inside the materials and components. Stress relief heat treatments can be used to reduce the magnitude of the residual stresses: by uniformly heating a structure to a sufficiently high temperature, and then uniformly cooling it, residual stresses can be relaxed. This process generally requires the insertion of the entire component in a large furnace, for a fairly long period of time.In this paper, the possibility of using a high power laser source to locally relieve residual stresses is studied; this has the advantage of calibrating and confining the relief process just to the laser affected area. An experimental set-up was tested on an aluminium specimen, and the preliminary results are reported in this paper.

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“…Most of the work has been done on simplified geometries where modeling approximations can be justified, that is, two-dimensional FE welding simulations using plane strain 7 and generalized plane strain conditions 8 for plates and axisymmetric conditions for pipes. 9,10 Moreover, Canas et al 11 proposed a simplified one-dimensional bar model for thermal and residual stress analysis of welded plates assuming elastic–plastic behavior and constant temperature field along the weld. Barroso et al 12 obtained acceptable results with reasonable accuracy when different simplified approaches 11,13–16 are implemented on butt-welded thin plates of nickel-based alloys.…”

Section: Introductionmentioning

confidence: 99%

Development of efficient three-dimensional welding simulation approach for residual stress estimation in different welded joints

Bhatti

Barsoum

2012

The Journal of Strain Analysis for Engineering Design

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Based on the available welding simulation approaches found in the literature, an alternative and simplified welding simulation approach is developed, called rapid dumping. It is a sequential thermomechanical approach, which makes use of the moving heat source in thermal analysis and the block-dumping approach in mechanical analysis for prediction of welding residual stresses in three dimensions. It is first developed for longitudinal stiffener joint and then validated by applying on a butt-welded, T-fillet, and multipass tube-flange joints. The temperature-dependent material properties were obtained using JMat Pro software, a java-based material property simulation software. The material properties were validated with experimentally determined material properties found in the literature. The predicted residual stresses were validated by X-ray diffraction measurements on the longitudinal stiffener fillet-welded joint. Using the rapid-dumping approach, the residual stresses obtained at the weld toe were in qualitatively good agreement with the measured residual stresses. The rapid-dumping approach showed to capture the effects of moving heat source and weld start/stop location. In addition, it has reduced the computational time significantly with a preserved accuracy of the estimated welding residual stresses.

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A one-dimensional model for the prediction of residual stress and its relief in welded plates

Cited by 13 publications

References 12 publications

Experimental and numerical investigations: Alleviating tensile residual stresses in flash-butt welds by localised rapid post-weld heat treatment

Experimental and numerical investigations: Alleviating tensile residual stresses in flash-butt welds by localised rapid post-weld heat treatment

Feasibility of Local Stress Relaxation by Laser Annealing and X‐ray Measurement

Development of efficient three-dimensional welding simulation approach for residual stress estimation in different welded joints

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