Solving The Inverse Problem Of Intervals Of Viscoelasticity Via Ant Colony Algorithm

This paper presents a numerical model solving the inverse problem of intervals of homogeneous and inhomogeneous elasticity; also presents a numerical model solving the direct problem of intervals of viscoelasticity. A perturbation finite element technique with interval parameters is employed in the direct interval analysis; a Gridding Partition based colony algorithm is used to identify elastic constitutive interval parameters and viscoelastic constitutive interval parameters. The impacts of the uncertainty, the ant number, the initial guess and the data noise on the solutions are taken into account, and satisfactory results are achieved in the numerical verification.This paper provides a valuable reference for theoretical study and engineering application of the inverse problem of intervals, and also enriches research contents of interval analysis and the ant colony algorithm.