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A derivative-free trust-region algorithm for reliability-based optimization

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Abstract

In this note, we present a derivative-free trust-region (TR) algorithm for reliability based optimization (RBO) problems. The proposed algorithm consists of solving a set of subproblems, in which simple surrogate models of the reliability constraints are constructed and used in solving the subproblems. Taking advantage of the special structure of the RBO problems, we employ a sample reweighting method to evaluate the failure probabilities, which constructs the surrogate for the reliability constraints by performing only a single full reliability evaluation in each iteration. With numerical experiments, we illustrate that the proposed algorithm is competitive against existing methods.

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Correspondence to Jinglai Li.

Additional information

This work was supported by the NSFC under grant number 11301337 and by the National Basic Research Program (973 Program) of China under grant number 2014CB744900.

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Gao, T., Li, J. A derivative-free trust-region algorithm for reliability-based optimization. Struct Multidisc Optim 55, 1535–1539 (2017). https://doi.org/10.1007/s00158-016-1587-y

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  • DOI: https://doi.org/10.1007/s00158-016-1587-y

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