A Study on the Buckling in Fillet Welds of Sheets

Chu, Hwan-Su; Cho, Sang-Myung

doi:10.5781/kwjs.2009.27.3.060

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…Multiple waves of deflection were observed, and they were introduced in the numerical models for consequent buckling strength and ultimate strength analysis. Chu and Cho [4] measured the plate shape after welding in bead-on-plate and fillet welding joints. The welding speed, welding sequence, and constraint type were found to be influential factors of the buckling mode and magnitude.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis and In-Situ Measurement of Out-of-Plane Distortion in Thin Plate TIG Welding

et al. 2019

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Transient distortion of thin plate in the welding process usually has a complicated mode and large magnitude. Quantitative measurement and prediction of full-field distortion are challenging and rarely reported up to now. In this study, the out-of-plane distortion of a thin plate during the Tungsten Inert Gas (TIG) welding process was measured using the digital image correlation (DIC) method. A simulation model based on thermal elastic–plastic finite element method (FEM) and DIC measured geometric imperfection were developed for accurate prediction of the transient welding distortion. The numerical results and experimental data agreed very well in both out-of-plane deformation modes and magnitudes of the plate at different stages of welding. The maximum out-of-plane distortion was larger than 4 mm during welding which can cause instability of arc length and heat input. The distance change between welding torch and plate surface was investigated under different initial deflections of the plate before welding. The plate with flat geometry shows the minimum transient and final gap change. In addition, the relationship between heat input and welding distortion was clarified through a series of numerical analyses. Optimization of welding heat input can be performed based on numerical results to avoid excessive welding distortion.

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Section: Introductionmentioning

confidence: 99%

Finite Element Analysis and In-Situ Measurement of Out-of-Plane Distortion in Thin Plate TIG Welding

et al. 2019

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Numerical prediction of deformation in thin-plate welded joints using equivalent thermal strain method

Kim

2020

Thin-Walled Structures

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Evaluation of the Stress Occurring Phenomenon for Cold-Rolled Carbon Steel During a Laser Welding Process

Lee¹,

Lee²

2013

Journal of the Korean Welding and Joining Society

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Residual stress caused in the weldments with high restraint force are often observed during welding in the weldments of Inner and outdoor materials or radial tanks. The reason is that quantitative analysis about thermal stresses during laser welding is lacking for this weldments. To verify Finite Elements Method (FEM) theory, the temperature was measured with thermocouple in a real time in this paper. Also analysis of the thermal stress for welding condition is performed by Comsol program package on various welding condition in SCP1-S butt welding. The principal stress in laser welding process is seen through the width direction. Also, it was confirmed that a change in base metal by thermal expansion made the stress in width direction stronger. Base metal close to the weld bead as the process progresses to the tensile stress in the compressive stress was varied. It was shown that the change of stress was quantitative from the bead at a certain distance.

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A Study on the Buckling in Fillet Welds of Sheets

Cited by 4 publications

References 2 publications

Finite Element Analysis and In-Situ Measurement of Out-of-Plane Distortion in Thin Plate TIG Welding

Finite Element Analysis and In-Situ Measurement of Out-of-Plane Distortion in Thin Plate TIG Welding

Numerical prediction of deformation in thin-plate welded joints using equivalent thermal strain method

Evaluation of the Stress Occurring Phenomenon for Cold-Rolled Carbon Steel During a Laser Welding Process

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