Sequential Optimization and Reliability Assessment for Multidisciplinary Systems Design

Abstract

With higher reliability and safety requirements, reliability-based design has been increasingly applied in multidisciplinary design optimization (MDO). A direct integration of reliability-based design and MDO may present tremendous implementation and numerical difficulties. In this work, a methodology of sequential optimization and reliability assessment for MDO is proposed to improve the efficiency of reliability-based MDO. The central idea is to decouple the reliability analysis from MDO with sequential cycles of reliability analysis and deterministic MDO. The reliability analysis is based on the first-order reliability method (FORM). In the proposed method, the reliability analysis and the deterministic MDO use two MDO strategies, the multidisciplinary feasible approach and the individual disciplinary feasible approach. The effectiveness of the proposed method is illustrated with two example problems.

Department(s)

Mechanical and Aerospace Engineering

Sponsor(s)

National Science Foundation (U.S.)
University of Missouri--Rolla. Intelligent Systems Center
University of Missouri Research Board

Keywords and Phrases

Most Probable Point; Reliability Analysis; Reliability-Based Design; Multidisciplinary design optimization

International Standard Serial Number (ISSN)

1615-147X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2008 Springer Verlag, All rights reserved.

Publication Date

01 Feb 2008

Link to Full Text

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