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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:LiWei,KANG Hai-gui.Improved response surface method based on sample point selection strategies[J].Journal of Harbin Institute Of Technology(New Series),2010,17(6):756-760.DOI:10.11916/j.issn.1005-9113.2010.06.004.
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Improved response surface method based on sample point selection strategies
Author NameAffiliation
LiWei State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China 
KANG Hai-gui State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China 
Abstract:
In the reliability analysis of complex structures,response surface method(RSM)has been suggested as an efficient technique to estimate the actual but implicit limit state function.A set of sample points are needed to fit to the implicit function.It has been noted that the accuracy of RSM depends highly on the so-called sample points.However,the technique for point selection has had little attention.In the present study,an improved response surface method(IRSM)based on two sample point selection techniques,named the direction cosines projected strategy(DCS)and the limit step length iteration strategy(LSS),is investigated.Since it uses the sampling points selected to be located in the region close to the original failure surface,and since it needs only one response surface,the IRSM should be accurate and simple in practical structural problems.Applications to several typical examples have helped to elucidate the successful working of the IRSM.
Key words:  sample points  linear approximation method  RSM  reliability
DOI：10.11916/j.issn.1005-9113.2010.06.004
Clc Number:P751
Fund:

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