Applied Mathematics and Mechanics (English Edition) ›› 1997, Vol. 18 ›› Issue (7): 679-687.
吕恩林
Lü Enling
摘要: In this paper. the random interval equilibrium equations (RIEE) is obtained by λ-level cutting the fuzzy-stochastic finite element equilibrium equations (FSFEEE).Based on the relations between the variables of equilibrium equations, solvting RIEE istransformed into solving two kinds of general random equilibrium equaltions (GREE).Then the recursive equations of evaluaing the random interval displacement is derivedfrom the Small-parameter perturbation theory. The computational formulae of statisticalcharacteristic of the fuzzy random displacements, the fuzzy random strains and thefuzzy random stresses are also deduced in detail.