Author(s)

H.B. Coda & W.S. Venturing

Abstract

In this work a two dimensional boundary element method formulation to deal with non-linear stress analysis is presented. The time integration processes are based on the Newmarkp and Houbolt methods. Explicit and implicit techniques are used to solve the non-linear elastoplastic relations. A new approach to evaluate implicitly the acceleration and velocity at time steps is proposed. Viscous dumping, initial conditions, base movements and body forces are also considered. Introduction: Several works exhibit great progresses on the application of BEM mass matrix approach for dynamic analysis of material non-linear bodies [1,2,3,4]. In this paper, this subject is studied again. A general non-linear dynamic approach is presented where implicit and explicit techniques are used to analyse plastic solids. The dynamic behaviour is so

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