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Thermal Distortion Analysis by Inconel Over-Lay At Circular Moonpool Structures
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 Title & Authors
Thermal Distortion Analysis by Inconel Over-Lay At Circular Moonpool Structures
Ha, Yunsok;
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 Abstract
This study is mainly interested in roundness of a circular moonpool structure in FPSO. Because this structure needs abrasion-resistance on inner wall, we should do buttering widely and deeply by using Inconel. But a general buttering can cause a severe distortion at structures. If someone can analyze the roundness by thermal distortion under Inconel over-lay, an erection policy can be established. In this study, shrinkage methodology by designed stress-strain curve was used and the result allowed deciding an appropriate block size.
 Keywords
Shrinkage methodology;Moonpool;Inconel;Over-lay;Roundness deviation;Thermal distortion;
 Language
English
 Cited by
1.
Tethers tension force effect in the response of a squared tension leg platform subjected to ocean waves, Ocean Systems Engineering, 2014, 4, 4, 327  crossref(new windwow)
 References
1.
Sungwoo Han, Joosung Lee, and Sangil Kim, A Study on the Weld-induced Deformation and Residual Stress Analysis at FPSO Moon Pool Structure J. of the Soc. of Naval Architects of Korea, 48 (5) (2011) 473-478. (in Korean) crossref(new window)

2.
Yunsok Ha, A Study on Weldment Boundary Condition for Elasto-Plastic Thermal Distortion Analysis of Large Welded Structures," J. of the KWJS, 29 (4) (2011) 48-53. (in Korean) crossref(new window)

3.
Mohd Shahar Sulaiman, Yupiter HP Manurung, Esa Haruman, Mphammad Rizwan Abdul Rahim, Mohd Ridhwan Rezda, Robert Ngendang Ak. Lidam, Sunhaji Kiyai Abas, Ghalib Tham, and Chan Yin Chau, Simulation and Experimental study on Distortion of Butt and T-joints using WELD PLANNER, J. Mech. Sci. Tech., 25 (10) (2011) 2641-2646. crossref(new window)

4.
Changdoo Jang, Seungil Seo, and Daeeun Ko, A Study on the Prediction of Deformations of Plates Due to Line Heating Using a Simplified Thermal Elasto-Plastic Analysis, JSR Vol 13 (1) (1997) 22-27.

5.
Yunsok Ha, Sihoon Cho, and Taewon Jang, Development of Welding Distortion Analysis Method Using Residual Strain as Boundary Condition, MSF, Vol 580-582 (2008) 649-654. crossref(new window)

6.
Yunsok Ha and Rajesh, SR, Thermal Distortion Analysis Method for TMCP Steel structures Us-ing Shell Element, Inter J Nav Archit Oc Engng, 1 (2) (2009) 95-100.

7.
Changdoo Jang, Changhyun Lee, and Daeeun Ko, Prediction of welding deformations of stiffened panels, Proc Instn Mech Engrs, 216 Part M:J Engineering for the Maritime Environment (2002) 133-143.

8.
Yunsok Ha and Changdoo Jang, An Improved Inherent Strain Analysis for Plate Bending by Line Heating Considering Phase Transformation of Steel, Int. J. of Offs. & Pol. Eng. 17 (2) (2007) 139-144.

9.
Yunsok Ha, Changdoo Jang, Jongtae Kim, and Hyungseok Mun, Analysis of Post-Weld Deformation at the Heat-Affected Zone Using External Forces Based on the Inherent Strain, IJPEM, 8 (4) (2007) 56-62.

10.
Special metals INCONEL(R) alloy 625 SMC-063, (2006) http://www.specialmetals.com