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A New Approach for System Reliability-Based Design Optimization
Technical Paper
2005-01-0348
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An efficient approach for Reliability-Based Design Optimization (RBDO) of series systems is presented. A modified formulation of the RBDO problem is employed in which the required reliabilities of the failure modes of a system are design variables. This allows for an optimal apportionment of the reliability of a system among its failure modes. A sequential optimization and reliability assessment method is used to efficiently determine the optimum design. Here, the constraints on the reliabilities of the failure modes of the RBDO problem are replaced with deterministic constraints. The method is demonstrated on an example problem that has been solved in a previous study that did not treat the required reliability levels of the failure modes as design variables. The new approach finds designs with lower mass than designs found in the previous study without reducing their system reliability.
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Citation
Ba-abbad, M., Kapania, R., and Nikolaidis, E., "A New Approach for System Reliability-Based Design Optimization," SAE Technical Paper 2005-01-0348, 2005, https://doi.org/10.4271/2005-01-0348.Also In
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