Challenges and advances in system reliability-based optimization of structural topology

T. H. Nguyen, J. Song, G. H. Paulino

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

Abstract

Recently, the authors have been making research efforts to overcome technical challenges in applying design/topology optimization techniques to large-scale structural systems with uncertainties. First, in order to evaluate the probability of a system failure event and its parameter sensitivities accurately and efficiently during reliability-based design optimization, a system reliability-based design optimization (SRBDO) approach using the matrix-based system reliability (MSR) method was developed. In this approach, the MSR method utilizes matrix calculations to evaluate the system failure probability and its parameter sensitivities. The SRBDO/MSR approach is applicable to general systems including series, parallel, cut-set and link-set systems consisting of statistically dependent component events. Second, the material distribution method used for topology optimization often requires a large number of design variables, especially in three-dimensional applications. A multiresolution topology optimization (MTOP) scheme is thus developed to obtain high resolution optimal topologies with relatively low computational cost. These technical advances enable system reliability-based optimization of large-scale structural topology with low computational cost. This paper presents the SRBDO/MSR approach and MTOP scheme, respectively, and demonstrates these technological advances through numerical examples of system reliability-based optimization of structural topology.

Original languageEnglish (US)
Title of host publicationProceedings of the 19th Analysis and Computation Specialty Conference
Pages480-491
Number of pages12
DOIs
StatePublished - Jul 27 2010
Event19th Analysis and Computation Specialty Conference - Orlando, FL, United States
Duration: May 12 2010May 15 2010

Publication series

NameProceedings of the 19th Analysis and Computation Specialty Conference

Other

Other19th Analysis and Computation Specialty Conference
CountryUnited States
CityOrlando, FL
Period5/12/105/15/10

Keywords

  • Optimization
  • Structural design
  • Structural systems

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Safety, Risk, Reliability and Quality
  • Building and Construction

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  • Cite this

    Nguyen, T. H., Song, J., & Paulino, G. H. (2010). Challenges and advances in system reliability-based optimization of structural topology. In Proceedings of the 19th Analysis and Computation Specialty Conference (pp. 480-491). (Proceedings of the 19th Analysis and Computation Specialty Conference). https://doi.org/10.1061/41131(370)42