Reduction-Based Model Updating of a Scaled Offshore Platform Structure

doi:10.1061/(ASCE)0733-9399(2010)136:2(131)

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
发表期刊	Journal of Engineering Mechanics-Asce
	2010
卷号	136 期号:2 页码:131-142
ISSN	0733-9399
摘要	This 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.
DOI	10.1061/(ASCE)0733-9399(2010)136:2(131)
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000273673500001
关键词[WOS]	FINITE-ELEMENT MODEL ; DYNAMIC CONDENSATION METHOD ; COMPONENT MODAL SYNTHESIS ; RESPONSE FUNCTION DATA ; ITERATED IRS METHOD ; NEURAL-NETWORKS ; FREQUENCY-RESPONSE ; RITZ VECTORS ; SYSTEMS ; IDENTIFICATION
WOS研究方向	Engineering
WOS类目	Engineering, Mechanical
项目资助者	China National Offshore Oil Corporation (CNOOC) and Chinese Academy of Sciences [KJCX2-SWL03-0] ; Chinese Academy of Sciences
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/43615
专题	水动力学与海洋工程重点实验室(2009-2011)
通讯作者	Ding H
推荐引用方式 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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