Author(s)

G. Ghazlan, C. Petit & S. Caperaa

Abstract

A computational method for the analysis of viscoelastic structures containing defects G. Ghazlan," C. Petit," S. Caperaa* " Civil Engineering Laboratory, University of Limoges, 19300 Egletons, France & School of Mechanical Engineering, C.M.A.O. Automatic Production, B.P. 1629, 65016 Tarbes, France ABSTRACT A computational method is presented for the analysis of quasi-static, li- near, small strain structures containing defects. The method of analysis involves the use of a discrete creep spectrum to simplify the equations governing the viscoelastic process. Viscoelastic constitutive equations are then given in terms of middle surface strains and curvatures and their conjugated stress resultants. This leads to great savings in the amount of computer storage needed to solve problems involving three-dimensional loadings. Solutions are then obtained by a "forward marching" process where solutions of a particular time are found from those at a previous time. A method is presented whi

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