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Improved Response Surface Method Based on Linear Gradient Iterative Criterion
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Improved Response Surface Method Based on Linear Gradient Iterative Criterion
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Journal Article
Improved Response Surface Method Based on Linear Gradient Iterative Criterion
2023
Overview
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.
Publisher
Hindawi,John Wiley & Sons, Inc,Wiley
Subject
