IMECH-IR  > 水动力学与海洋工程重点实验室(2009-2011)
Reduction-Based Model Updating of a Scaled Offshore Platform Structure
Li H; Ding H(丁桦); Ding H
Source PublicationJournal of Engineering Mechanics-Asce
2010
Volume136Issue:2Pages:131-142
ISSN0733-9399
AbstractThis paper attempts to develop a reduction-based model updating technique for jacket offshore platform structure. A reduced model is used instead of the direct finite-element model of the real structure in order to circumvent such difficulties as huge degrees of freedom and incomplete experimental data that are usually civil engineers' trouble during the model updating. The whole process consists of three steps: reduction of FE model, the first model updating to minimize the reduction error, and the second model updating to minimize the modeling error of the reduced model and the real structure. According to the performance of jacket platforms, a local-rigidity assumption is employed to obtain the reduced model. The technique is applied in a downscale model of a four-legged offshore platform where its effectiveness is well proven. Furthermore, a comparison between the real structure and its numerical models in the following model validation shows that the updated models have good approximation to the real structure. Besides, some difficulties in the field of model updating are also discussed.
DOI10.1061/(ASCE)0733-9399(2010)136:2(131)
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000273673500001
WOS KeywordFINITE-ELEMENT MODEL ; DYNAMIC CONDENSATION METHOD ; COMPONENT MODAL SYNTHESIS ; RESPONSE FUNCTION DATA ; ITERATED IRS METHOD ; NEURAL-NETWORKS ; FREQUENCY-RESPONSE ; RITZ VECTORS ; SYSTEMS ; IDENTIFICATION
WOS Research AreaEngineering
WOS SubjectEngineering, Mechanical
Funding OrganizationChina National Offshore Oil Corporation (CNOOC) and Chinese Academy of Sciences [KJCX2-SWL03-0] ; Chinese Academy of Sciences
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43615
Collection水动力学与海洋工程重点实验室(2009-2011)
Corresponding AuthorDing H
Recommended Citation
GB/T 7714
Li H,Ding H,Ding H. Reduction-Based Model Updating of a Scaled Offshore Platform Structure[J]. Journal of Engineering Mechanics-Asce,2010,136(2):131-142.
APA Li H,丁桦,&Ding H.(2010).Reduction-Based Model Updating of a Scaled Offshore Platform Structure.Journal of Engineering Mechanics-Asce,136(2),131-142.
MLA Li H,et al."Reduction-Based Model Updating of a Scaled Offshore Platform Structure".Journal of Engineering Mechanics-Asce 136.2(2010):131-142.
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