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How to simulate random spacial variability of an orthotropic material property is demonstrated ． The simu 正 ation technique for generating the sample spacial irregularities is presented by taking the orthotropic characteristics into account ． Through the Monte Carlo calculations by utilizing the simulation technique aleng 曽 ith the fi ． nite element analysis ， the orthotropic stress variations due to the spac 三 al variabilities of the elas ． tic coefficients are provided ． Keyworzts：erthotropic ， sPacinl uariabilitcr ， stochastic field ， samPle function ， simulatien ， matert

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