Structural optimization based on component-level reliabilities

Sankaran Mahadevan, Achintya Haldar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A minimum-weight optimum design procedure is proposed including the reliabilities of various elements in a structure as constraints. The reliability indices corresponding to the various limit states are computed using the Stochastic Finite Element Method, and are required to be within a desired narrow range. A derivative-free constrained optimization algorithm with variable discrete step sizes is used to obtain the optimum design. Both serviceability and ultimate limit states can be incorporated; also, different levels of risk can be assigned to different limit states indicating their relative importance. The procedure can include system reliability constraints, has options for the addition or deletion of constraints, and can use design groups of similar members for computational efficiency.

Original languageEnglish (US)
Title of host publicationProc ICOSSAR 89 5th Int Conf Struct Saf Reliab
PublisherPubl by ASCE
Pages1887-1894
Number of pages8
ISBN (Print)0872627438
StatePublished - Dec 1 1989
Externally publishedYes
EventProceedings of ICOSSAR '89, the 5th International Conference on Structural Safety and Reliability, Part III - San Francisco, CA, USA
Duration: Aug 7 1989Aug 11 1989

Publication series

NameProc ICOSSAR 89 5th Int Conf Struct Saf Reliab

Other

OtherProceedings of ICOSSAR '89, the 5th International Conference on Structural Safety and Reliability, Part III
CitySan Francisco, CA, USA
Period8/7/898/11/89

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Mahadevan, S., & Haldar, A. (1989). Structural optimization based on component-level reliabilities. In Proc ICOSSAR 89 5th Int Conf Struct Saf Reliab (pp. 1887-1894). (Proc ICOSSAR 89 5th Int Conf Struct Saf Reliab). Publ by ASCE.