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Improved Response Surface Method Based on Linear Gradient Iterative Criterion

Authors :
Yu Xia
Wenzheng Kong
Yingye Yu
Yiying Hu
Jinyou Li
Source :
Advances in Civil Engineering, Vol 2023 (2023)
Publication Year :
2023
Publisher :
Hindawi Limited, 2023.

Abstract

Aiming at the problem of big calculation error in solving reliability index by the traditional response surface method, an improved response surface method based on the linear gradient iteration criterion is proposed. First, the linear gradient iteration criterion is proposed to reduce the iteration step size with the increase of iteration times. It will improve the fitting accuracy of response surface and lead to a better convergence while approaching the limit state surface. Then, the reduction coefficient of the linear gradient iterative criterion is studied. The optimal value of coefficient is 0.2. The improved response surface method will get a more accurate reliability index quickly. Examples show that the proposed method has obvious advantages of high accuracy and efficiency. The application of this method can also be expanded in other similar engineering structure.

Details

Language :
English
ISSN :
16878094 and 24132772
Volume :
2023
Database :
Directory of Open Access Journals
Journal :
Advances in Civil Engineering
Publication Type :
Academic Journal
Accession number :
edsdoj.24132772f1b24d619bde40f34f708cd4
Document Type :
article
Full Text :
https://doi.org/10.1155/2023/6360796