Extensions of design potential concept for reliability-based design optimization to nonsmooth and extreme cases

K. K CHOI; J TU; Y. H PARK

doi:10.1007/s00158-001-0154-2

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Extensions of design potential concept for reliability-based design optimization to nonsmooth and extreme cases

Journal article

Peer reviewed

Extensions of design potential concept for reliability-based design optimization to nonsmooth and extreme cases

K. K CHOI, J TU and Y. H PARK

Structural and multidisciplinary optimization, Vol.22(5), pp.335-350

2001

DOI: 10.1007/s00158-001-0154-2

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Abstract

The reliability-based design optimization (RBDO) can be described by the design potential concept in a unified system space, where the probabilistic constraint is identified by the design potential surface of the reliability target that is obtained analytically from the first-order reliability method (FORM). This paper extends the design potential concept to treat nonsmooth probabilistic constraints and extreme case design in RBDO. In addition, refinement of the design potential surface, which yields better optimum design, can be obtained using more accurate second-order reliability method (SORM). By integrating performance probability analysis into the iterative design optimization process, the design potential concept leads to a very effective design potential method (DPM) for robust system parameter design. It can also be applied effectively to extreme case design (ECD) by directly representing a probabilistic constraint in terms of the system performance function.

Solid Mechanics

Applied Sciences

Physics

Reliability theory. Replacement problems

Fundamental areas of phenomenology (including applications)

Structural and continuum mechanics

Operational research and scientific management

Fracture mechanics, fatigue and cracks

Exact sciences and technology

Fracture mechanics (crack, fatigue, damage...)

Operational research. Management science

Details

Title: Subtitle: Extensions of design potential concept for reliability-based design optimization to nonsmooth and extreme cases
Creators: K. K CHOI - Center for Computer-Aided Design, and Department of Mechanical Engineering, College of Engineering, The University of Iowa, Iowa City, IA 52242, United States
J TU - Center for Computer-Aided Design, and Department of Mechanical Engineering, College of Engineering, The University of Iowa, Iowa City, IA 52242, United States
Y. H PARK - Center for Computer-Aided Design, and Department of Mechanical Engineering, College of Engineering, The University of Iowa, Iowa City, IA 52242, United States
Resource Type: Journal article
Publication Details: Structural and multidisciplinary optimization, Vol.22(5), pp.335-350
Publisher: Springer; Berlin
DOI: 10.1007/s00158-001-0154-2
ISSN: 1615-147X
eISSN: 1615-1488
Language: English
Date published: 2001
Academic Unit: Mechanical Engineering
Record Identifier: 9984064111102771

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