Transient dynamic elastoplastic analysis by the time-domain BEM formulation

摘要

This paper presents a time-domain BEM formulation applied to the solution of transient dynamic elastoplastic problems. The initial stress approach is adopted to solve the elalstoplasic problem. Linear time variation is assumed for the displacements and initial stress components whereas traction components are assumed to have a constant time variation. Boundary discretization employs linear element ts and the part of the domain where plastic deformation is expected occur is discretized by employing linear triangular cells. Time integrals are computed analytically, boundary integrals are computed numerically and the domain integrals are computed by following a semi-analytic procedure. A numerical example is present and the results are compared with another BEM formulation.