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Keywords: inherent strain
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Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-462
... A Study on Welding Distortion Mitigation by Gas Heating Using a Linearized Inherent Strain Method Hector Ruiz 1, Naoki Osawa 1, Sherif Rashed 2 1 Department of Naval Architecture & Ocean Engineering, Osaka University 2 Joining and Welding Research Institute, Osaka University Suita, Osaka, Japan...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-410
... downward force experimental result maximum temperature thermal elasto-plastic analysis aluminum battery housing welding line work piece deformation strain method inherent strain method heat transfer analysis fsw welding deformation temperature gradient inherent strain A Study...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-614
...). The A-B and B regions are solved separately, and balance on the boundary between the regions is realized by iterative calculations. Recently, the i-ISM (inherent strain based ISM) was proposed by introducing the concept of inherent strain into the ISM scheme. The region C which covers a part large...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-613
... tensional loads are added to corrected parts by a lifting. We used inherent strains in calculating the efficiency and established the methodology, where the positions for carlings are. This process makes progress by using correction heating analysis based on FEA (Finite Element Analysis) and it is possible...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-143
... input parameter shrinkage osaka university assembly sequence displacement inherent strain distortion assembly interface element Prediction of Longitudinal Bending Deformation of Ship Produced by Block Assembly Hidekazu Murakawa, Hisashi Serizawa Joining and Welding Research Institute, Osaka...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-136
... distortion stiffener deflection upstream oil & gas welding deformation theory inherent deformation residual stress murakawa inherent strain welding deformation angular distortion plastic strain welding distortion fillet elastic analysis thin plate deformation deformation...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-554
... ABSTRACT The equivalent load method based on the inherent strain approach is suggested as an efficient welding deformation and residual stress analysis method for large scale friction stir welded structures of aluminum alloy Al6061-T6 sheet metal. The result of the proposed equivalent load...
Proceedings Papers

Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-321
... can be determined by integrating the inherent strain over the cross section of the plate as follows, Proceedings of the Eighteenth (2008) International Offshore and Polar Engineering Conference Vancouver, BC, Canada, July 6-11, 2008 Copyright © 2008 by The International Society of Offshore and Polar...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-185
... superimposing inherent deformations of single heating lines in an elastic analysis. In this paper, the behavior of a thick plate formed by line heating is studied. inherent strain sequence line heating heating sequence heating 2 inherent deformation shrinkage separation inherent transverse...
Proceedings Papers

Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-181
... deformation heating process line heating inherent strain heat transfer analysis thickness inherent strain region heating heat flux artificial intelligence line heating process angular deformation optimal heating condition optimization problem heating condition shipyard prediction...
Proceedings Papers

Paper presented at the The Fourteenth International Offshore and Polar Engineering Conference, May 23–28, 2004
Paper Number: ISOPE-I-04-435
.... In this paper, the equivalent loading method based on the inherent strain theory was adopted. By the present approach, the welding distortion of a stiffened panel block was calculated according to the assembly sequences and the heat-correction process was simulated. It is verified through the...
Proceedings Papers

Paper presented at the The Thirteenth International Offshore and Polar Engineering Conference, May 25–30, 2003
Paper Number: ISOPE-I-03-352
... through the prediction of the welding distortion of the curved plate structures and the influence of the gap correction is investigated. KEY WORDS: Welding distortion; curved structure; prediction; inherent strain; interface element; misalignment; gap; twisting INTRODUCTION Thin plate structures, such as...
Proceedings Papers

Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-443
... ABSTRACT This paper deals with similarity law parameters, which decide residual stress distributions and welding deformations, derived from both welding conditions and plate sizes. In order to prove similarity law parameters, experiments of residual stresses, deformations and inherent strains...
Proceedings Papers

Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-448
... are some issues to be solved. Especially, floating structures being joined on the sea are not restricted tightly as compared to structures being joined on the ground. operation construction unit shape inherent strain floating production system precise estimation deformation welding...
Proceedings Papers

Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-444
... welding procedure, such as the welding sequence and the restraint on the joint to be welded. In this research, an elastic FEM method is developed to precisely predict assembled plate structures taking into account these factors. It employs the concept of inherent strain and the interface element to...
Proceedings Papers

Paper presented at the The Sixth International Offshore and Polar Engineering Conference, May 26–31, 1996
Paper Number: ISOPE-I-96-244
...]. The following three methods have been developed: (1) Thermal elasto-plastic analysis, (2) Experimental method for measurement of three dimensional residual stress using inherent strain (the source of residual stress) as .par~eter, and (3) Prediction method by elastic analysis usmg mherent strain which...
Proceedings Papers

Paper presented at the The Sixth International Offshore and Polar Engineering Conference, May 26–31, 1996
Paper Number: ISOPE-I-96-270
... be studied concurrently. Therefore this paper presents how to estimate the inherent strain by mapping between the shell surface and the developed plate. temperature distribution deformation reservoir surveillance production monitoring hull plate principal curvature relation line heating...

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