Multidisciplinary design optimization with discrete and continuous variables of various uncertainties. (English) Zbl 1274.74255
Summary: As a powerful design tool, Reliability Based Multidisciplinary Design Optimization (RBMDO) has received increasing attention to satisfy the requirement for high reliability and safety in complex and coupled systems. In many practical engineering design problems, design variables may consist of both discrete and continuous variables. Moreover, both aleatory and epistemic uncertainties may exist. This paper proposes the formula of RFCDV (Random/Fuzzy Continuous/Discrete Variables) Multidisciplinary Design Optimization (RFCDV-MDO), uncertainty analysis for RFCDV-MDO, and a method of RFCDV-MDO within the framework of Sequential Optimization and Reliability Assessment (RFCDV-MDO-SORA) to solve RFCDV-MDO problems. A mathematical problem and an engineering design problem are used to demonstrate the efficiency of the proposed method.
MSC:
| 74P05 | Compliance or weight optimization in solid mechanics |
| 90C90 | Applications of mathematical programming |
| 90C29 | Multi-objective and goal programming |
| 90C70 | Fuzzy and other nonstochastic uncertainty mathematical programming |
Keywords:
multidisciplinary design optimization; aleatory uncertainty; epistemic uncertainty; continuous/discrete variables; random/fuzzy continuous/discrete variables multidisciplinary design optimization (RFCDV-MDO); sequential optimization and reliability assessment (SORA)References:
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