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Structural and Multidisciplinary Optimization

, Volume 59, Issue 4, pp 1255–1271 | Cite as

An importance learning method for non-probabilistic reliability analysis and optimization

  • Zeng MengEmail author
  • Dequan Zhang
  • Gang Li
  • Bo Yu
Research Paper
  • 264 Downloads

Abstract

With the time-consuming computations incurred by nested double-loop strategy and multiple performance functions, the enhancement of computational efficiency for the non-probabilistic reliability estimation and optimization is a challenging problem in the assessment of structural safety. In this study, a novel importance learning method (ILM) is proposed on the basis of active learning technique using Kriging metamodel, which builds the Kriging model accurately and efficiently by considering the influence of the most concerned point. To further accelerate the convergence rate of non-probabilistic reliability analysis, a new stopping criterion is constructed to ensure accuracy of the Kriging model. For solving the non-probabilistic reliability-based design optimization (NRBDO) problems with multiple non-probabilistic constraints, a new active learning function is further developed based upon the ILM for dealing with this problem efficiently. The proposed ILM is verified by two non-probabilistic reliability estimation examples and three NRBDO examples. Comparing with the existing active learning methods, the optimal results calculated by the proposed ILM show high performance in terms of efficiency and accuracy.

Keywords

Non-probabilistic reliability Non-probabilistic reliability-based design optimization Convex model Importance learning method Kriging model 

Notes

Funding information

The supports of the National Natural Science Foundation of China (Grant Nos. 11602076 and 11502063), the Natural Science Foundation of Anhui Province (Grant No. 1708085QA06), the Foundation of State Key Laboratory of Structural Analysis for Industrial Equipment from Dalian University of Technology (Grant No. GZ1702), and the Fundamental Research Funds for the Central Universities of China (Grant No. JZ2018HGTB0231) are much appreciated.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Civil EngineeringHefei University of TechnologyHefeiPeople’s Republic of China
  2. 2.Department of Engineering Mechanics, State Key Laboratory of Structural Analyses for Industrial EquipmentDalian University of TechnologyDalianPeople’s Republic of China
  3. 3.State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Department of Mechanical EngineeringHebei University of TechnologyTianjinPeople’s Republic of China

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