Stochastic load exceedances with general material nonlinearity

Philip A. Thayaparan, Karen C. Chou

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Reliability of a structural member with nonlinear material property subjected to floor live-load processes is investigated. Earlier studies have assumed a bilinear load-deformation relationship. How- I ever, the actual force-deformation relationship exhibits a nonlinear curve, even for a very simple system. In this study, a multilinear I load-deformation model that can better approximate the actual material behavior is utilized. The first-moment statistics are derived for the number of load exceedances and damage duration for a structural member due to sustained and combined load processes. It is found that the derived results using a trilinear material model agree very well with the results obtained from simulated data. The differences are usually: within 3% for sustained load processes and somewhat higher, about I 10%, for combined processes.

Original languageEnglish (US)
Pages (from-to)1674-1686
Number of pages13
JournalJournal of Structural Engineering (United States)
Issue number7
StatePublished - Jul 1988

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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