Author(s)

F. Bassetti, C. Call, N. Cappetti

Abstract

An integrated theoretical and experimental approach for simulating tests in time dependent fracture mechanics F. Bassetti, C. Call, N. Cappetti Istituto di Ingegneria Meccanica, Universitd degli Studi di Salerno, Salerno, Italy ABSTRACT Several constant strain rate tests performed on polypropylene cracked specimens are simulated by integrating experimental and theoretical evaluations. Simulations are based on the recently proposed Schapery's approach to Viscoelastic Fracture Mechanics. For every test, finite element methodology (FEM) is firstly employed to evaluate nonlinear elastic Rice J-integral vs. imposed elongations curve. Pseudo-elastic quantities are then introduced and Schapery time dependent Jy integrals values consequently estimated and presented. INTRODUCTION Engineering plastics are nowadays encountering a spreading diffusion in structural applications. As a matter of fact, many engineers solve their problems using plastics in their des

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