Optimum analysis of offshore structures lifting padeyes using finite element method

Padeye design and analysis plays an important roles during the lifting, load out and installation of heavy structures. This study addressed the different dynamic amplification factors that are adapted in the oil and gas industry based on different design codes. This study explains the impact of limi...

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Main Author:	Abdelrahim Musa Mahgoub Hamadelnil
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/48555/1/AbdelrahimMusaMahgoubHamadelnilMFKA2014.pdf
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id	my-utm-ep.48555
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spelling	my-utm-ep.485552017-07-19T07:33:25Z Optimum analysis of offshore structures lifting padeyes using finite element method 2014 Abdelrahim Musa Mahgoub Hamadelnil, TA Engineering (General). Civil engineering (General) Padeye design and analysis plays an important roles during the lifting, load out and installation of heavy structures. This study addressed the different dynamic amplification factors that are adapted in the oil and gas industry based on different design codes. This study explains the impact of limiting the effective thickness of the cheek plate with respect to the main plate of the padeye and the advantages of increasing the effective thickness of the cheek plates. It also touched on the fabrication requirements to achieve the required effective thickness of the cheek plates. In addition, a sensitivity study about the impact of the out of plane force on the padeye design is addressed and the maximum out of plane angle that shall be considered is recommended. A finite element analysis using London University Structure Analysis System (LUSAS), is conducted and compared with the hand calculation. The benefits and advantage of using FE analysis is addressed in this study. At the end of this research a guideline on the design of the padeye is developed. It has been found that the dynamic amplification factor can be reduced to a lower value of 1.15 instead of 1.35. The effective thickness of the cheek plate can be increased to 100% with proper fabrication and welding sequence. Finite Element analysis is a good tool to have better analysis and design of the lifting padeyes. 2014 Thesis http://eprints.utm.my/id/eprint/48555/ http://eprints.utm.my/id/eprint/48555/1/AbdelrahimMusaMahgoubHamadelnilMFKA2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:84895?queryType=vitalDismax&query=Optimum+analysis+of+offshore+structures+lifting+padeyes+using+finite+element+method&public=true masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Abdelrahim Musa Mahgoub Hamadelnil, Optimum analysis of offshore structures lifting padeyes using finite element method
description	Padeye design and analysis plays an important roles during the lifting, load out and installation of heavy structures. This study addressed the different dynamic amplification factors that are adapted in the oil and gas industry based on different design codes. This study explains the impact of limiting the effective thickness of the cheek plate with respect to the main plate of the padeye and the advantages of increasing the effective thickness of the cheek plates. It also touched on the fabrication requirements to achieve the required effective thickness of the cheek plates. In addition, a sensitivity study about the impact of the out of plane force on the padeye design is addressed and the maximum out of plane angle that shall be considered is recommended. A finite element analysis using London University Structure Analysis System (LUSAS), is conducted and compared with the hand calculation. The benefits and advantage of using FE analysis is addressed in this study. At the end of this research a guideline on the design of the padeye is developed. It has been found that the dynamic amplification factor can be reduced to a lower value of 1.15 instead of 1.35. The effective thickness of the cheek plate can be increased to 100% with proper fabrication and welding sequence. Finite Element analysis is a good tool to have better analysis and design of the lifting padeyes.
format	Thesis
qualification_level	Master's degree
author	Abdelrahim Musa Mahgoub Hamadelnil,
author_facet	Abdelrahim Musa Mahgoub Hamadelnil,
author_sort	Abdelrahim Musa Mahgoub Hamadelnil,
title	Optimum analysis of offshore structures lifting padeyes using finite element method
title_short	Optimum analysis of offshore structures lifting padeyes using finite element method
title_full	Optimum analysis of offshore structures lifting padeyes using finite element method
title_fullStr	Optimum analysis of offshore structures lifting padeyes using finite element method
title_full_unstemmed	Optimum analysis of offshore structures lifting padeyes using finite element method
title_sort	optimum analysis of offshore structures lifting padeyes using finite element method
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/48555/1/AbdelrahimMusaMahgoubHamadelnilMFKA2014.pdf
_version_	1747817419026464768

Optimum analysis of offshore structures lifting padeyes using finite element method

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