AN INTERVAL FINITE ELEMENT METHOD FOR BUCKLING ANALYSIS OF FUZZY-STOCHASTIC STRUCTURES

Based on the confidence interval of the reliability and the λ-level cutting of the fuzzy set, the parameters of the stochastic and/or fuzzy is mapped onto interval numbers, and fuzzy-stochastic finite element equations are transformed into interval equations. With the interval operation method or the Monte-Carlo(M-C)simulating method, a solution to buckling problems for fuzzy-stochastic structures is put forward. The beam element model of the fuzzy-stochastic buckling structures is discussed. In combination with the structural stability theory, the effort of solution is nearly as the same as that of the general finite element method for determinant problems.