M., E., M., E., M., R. (2008). COMPUTER SIMULATION TECHNIQUE TO REDUCE RESULTED RESIDUAL STRESSES AND DISTORTION IN HIGH STRENGTH THIN BUTT WELDED SHIP PANELS. test, 13(13th International Conference on Applied Mechanics and Mechanical Engineering.), 97-110. doi: 10.21608/amme.2008.39730
EL-AFANDY M. M.; EL-GAMMAL M. M.; RASHWAN A. M.. "COMPUTER SIMULATION TECHNIQUE TO REDUCE RESULTED RESIDUAL STRESSES AND DISTORTION IN HIGH STRENGTH THIN BUTT WELDED SHIP PANELS". test, 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., 2008, 97-110. doi: 10.21608/amme.2008.39730
M., E., M., E., M., R. (2008). 'COMPUTER SIMULATION TECHNIQUE TO REDUCE RESULTED RESIDUAL STRESSES AND DISTORTION IN HIGH STRENGTH THIN BUTT WELDED SHIP PANELS', test, 13(13th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 97-110. doi: 10.21608/amme.2008.39730
M., E., M., E., M., R. COMPUTER SIMULATION TECHNIQUE TO REDUCE RESULTED RESIDUAL STRESSES AND DISTORTION IN HIGH STRENGTH THIN BUTT WELDED SHIP PANELS. test, 2008; 13(13th International Conference on Applied Mechanics and Mechanical Engineering.): 97-110. doi: 10.21608/amme.2008.39730

COMPUTER SIMULATION TECHNIQUE TO REDUCE RESULTED RESIDUAL STRESSES AND DISTORTION IN HIGH STRENGTH THIN BUTT WELDED SHIP PANELS

The International Conference on Applied Mechanics and Mechanical Engineering
Article 115, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Pages 97-110    PDF (753.97 K)
Document Type: Original Article
DOI: 10.21608/amme.2008.39730
Authors
EL-AFANDY M. M.1; EL-GAMMAL M. M.2; RASHWAN A. M.3
1Postgraduate Research Student, Naval Architecture and Marine Engineering Department, Faculty of Engineering, University of Alexandria, Egypt.
2Emeritus Professor of Material Technology and Welding Engineering, Naval Architecture and Marine Engineering Department, Faculty of Engineering, University of Alexandria, Egypt.
3Professor of Shipyard Technology, Naval Architecture and Marine Engineering Department, Faculty of Engineering, University of Alexandria, Egypt.
Abstract
ABSTRACT
Welding of thin-plate ship structures often results in warping of finished fabricated
panels. Some manufacturers use preheating and/or pre-stressing the plates during
assembly or post heating after assembly as a mitigation method to reduce final product
distortion with variably satisfactory results. The current paper aims to study the effect of
tensile force application (on the plates undergoing welding) on the residual stresses
and distortion behaviours of butt welded thin ship panels using the finite element
method. The effects on the butt welded thin panel applying several components of
different magnitudes of tensile forces before and during welding are shown. Those
external forces are released after the welded joint has reached the room temperature.
The stretching force leads to a reduction in the longitudinal residual stresses,
consequently reduced the buckling deformation. All those diagnostics will demolish the
welded plate distortion making it close to zero.
Keywords
Thin plates; plastic zone; tensile loads; welding distortion and longitudinal residual stresses
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