Author(s)

G.D. Hatzigeorgiou and D.E. Beskos

Abstract

Transient dynamic response of 3-D elastoplastic structures by the D/BEM G. D. Hatzigeorgiou and D. E. Beskos Department of Civil Engineering University ofPatras, Greece Abstract A general boundary element methodology is presented for the transient dynamic analysis of three-dimensional elastoplastic solids and structures. The elastostatic fundamental solution is employed in the integral formulation of the problem and this creates inertial volume integrals in addition to the nonlinear volume integrals due to inelasticity. Thus an interior discretization in addition to the usual surface discretization is necessary. Isoparametric linear quadrilateral elements are used for the surface discretization and isoparametric linear hexahedra for the interior discretization. Advanced numerical integration techniques for singular and nearly singular integrals are employed. Houbolt's step-by-step numerical time integration algorithm is used to provide the dynamic response. Numerical examples

Keywords