Computational Structural Mechanics

Abstract

This paper deals with the structural modeling of a family of similar, real structures taking into account uncertainties and modeling errors. The concept of Lack Of Knowledge (LOK), first introduced in [1, 2] , consists in globalizing the various sources of errors by means of internal variables, called the LOK variables, defined over an interval whose upper and lower bounds follow probabilistic laws. From these basic LOKs, one can derive for the whole structure the effective LOK for a quantity of interest α,