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Experimental evaluation of the static and dynamic characteristics of an offshore crane model

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Main Authors: T. L., Chan, Jawaid I., Inayat-Hussain, Assoc. Prof., K. S., Teoh, Y. T., Liew
Other Authors: tlcha6@student.monash.edu
Format: Article
Language:English
Published: The Institution of Engineers, Malaysia 2011
Subjects:
Dynamic characteristics
Finite-element analysis
Modal testing
Offshore crane
Static
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/13707
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spelling my.unimap-137072011-09-10T09:13:48Z Experimental evaluation of the static and dynamic characteristics of an offshore crane model T. L., Chan Jawaid I., Inayat-Hussain, Assoc. Prof. K. S., Teoh Y. T., Liew tlcha6@student.monash.edu Dynamic characteristics Finite-element analysis Modal testing Offshore crane Static Link to publisher's homepage at http://www.myiem.org.my/ The knowledge of the static and dynamic characteristics of cranes is of utmost importance in their design and construction in order to optimise the construction material costs as well as to optimize their response to static and dynamic loadings during operation. Although numerical simulation of the crane response subjected to various loading conditions are routinely undertaken in the design stage, experimental verification of these numerical results are rarely performed due to the high cost involved. Experimental verification of the static and dynamic characteristics of these cranes can however be performed at a significantly lower cost on their scaled-down models. The results from the scaled-down models provide useful insights into the static and dynamic performance of these cranes. In the work presented herein, a scaled-down model of a boom angle luffing crane prototype, typically employed in offshore engineering applications, was developed using dimensionless p parameters. The model, which has geometric and dynamic similarities with the prototype, was numerically and experimentally examined for its static and dynamic characteristics. The numerical analysis of the model was undertaken using a commercially available finite-element computer program, ANSYS. This program was utilized to compute the stiffness and stresses in the model subjected to static loads, as well as the natural frequencies and mode shapes, which represent the dynamic characteristics of the model. An experimental rig was fabricated based on the scaled-down model, and measurements were performed to verify the computational results obtained from the finite-element analysis. The static strains measured at various positions on the boom were found to be within 14% of those obtained numerically. The natural frequencies and mode shapes of the model crane were obtained using modal testing technique and were found to be in good agreement to those obtained numerically, with discrepancies within 3% for the first three modes. 2011-09-10T09:13:48Z 2011-09-10T09:13:48Z 2010-06 Article The Journal of the Institution of Engineers, Malaysia, vol. 71(2), 2010, pages 1-8 012 http://www.myiem.org.my/content/iem_journal_2010-181.aspx http://hdl.handle.net/123456789/13707 en The Institution of Engineers, Malaysia
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Dynamic characteristics
Finite-element analysis
Modal testing
Offshore crane
Static
spellingShingle Dynamic characteristics
Finite-element analysis
Modal testing
Offshore crane
Static
T. L., Chan
Jawaid I., Inayat-Hussain, Assoc. Prof.
K. S., Teoh
Y. T., Liew
Experimental evaluation of the static and dynamic characteristics of an offshore crane model
description Link to publisher's homepage at http://www.myiem.org.my/
author2 tlcha6@student.monash.edu
author_facet tlcha6@student.monash.edu
T. L., Chan
Jawaid I., Inayat-Hussain, Assoc. Prof.
K. S., Teoh
Y. T., Liew
format Article
author T. L., Chan
Jawaid I., Inayat-Hussain, Assoc. Prof.
K. S., Teoh
Y. T., Liew
author_sort T. L., Chan
title Experimental evaluation of the static and dynamic characteristics of an offshore crane model
title_short Experimental evaluation of the static and dynamic characteristics of an offshore crane model
title_full Experimental evaluation of the static and dynamic characteristics of an offshore crane model
title_fullStr Experimental evaluation of the static and dynamic characteristics of an offshore crane model
title_full_unstemmed Experimental evaluation of the static and dynamic characteristics of an offshore crane model
title_sort experimental evaluation of the static and dynamic characteristics of an offshore crane model
publisher The Institution of Engineers, Malaysia
publishDate 2011
url http://dspace.unimap.edu.my/xmlui/handle/123456789/13707
_version_ 1643791002987659264
score 13.222552

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