Application of the Stochastic Finite Element Method to Structural System Reliability Analysis

서지정보

ㆍ발행기관 : 한국전산구조공학회 ㆍ수록지정보 : 한국전산구조공학회 논문집 / 5권 / 1호
ㆍ저자명 : Lee Joo Sung

한국어 초록

This pa야r 15 an attempt to aα:ount for the uncertainty of the residual strength in the reliability
analysis of structural systems. For this purpose the stochastic finite element meth여(SFEM) is li띠<ed
to the system reliability analysis pr'∞edure. The stochastic finite element is known to be able to a more
explicitly ∞nsider the effect of uncerainties of material and g∞metric variables on those of load effects
in structural analysis prlα:edure. The method has been applied to system as well as comφnent reliability
analysis of a plane structure. Comparison of the results by the present approach is made with the
method in which the residual strength of f려led ∞mponent is treated as deterministic variable. Several
case studies have been carriE최 to show the effect of uncertainty in residual strength of a member after
failure. Is has been ∞nform어 that reidual strength very much affect the system reliability level. It can
be, hence, ∞ncluded that the uncertainties in the αlSt-ultimate behaviour may have to be t혀<en mto
account in the system reliability analy의s for a better a s않ssment of the system reliability especially
for a struct파e of which member behaviour is m여ell어 as asemi-brittle model.And then the sto .:hastic
finite element method can efh디ently evaluate the system reliability.

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