WIT Press


A BEM-FEM Approach To Unilateral Contact Problem Of Dynamic Soil-pile Interaction

Price

Free (open access)

Paper DOI

10.2495/BE950441

Volume

10

Pages

6

Published

1995

Size

546 kb

Author(s)

A. Liolios, S. Tsalkatidis & S. Logothetidis

Abstract

A numerical approach is presented for the dynamic soil-pile interaction considered as an inequality problem of structural engineering. So, the unilateral contact conditions due to tensionless and elastoplastic softening/fracturing behaviour of the soil as well as due to gapping are taken into account. The numerical approach is based on a double discretization and on mathematical programming. First, in space the finite element method is used for the pile and the unilateral contact in combination with the boundary element method for the soil simulation. Next, with the aid of Laplace transform, the problem conditions are transformed to convolutional ones involving the unilateral quantities only as unknowns .So the number of unknowns is significantly reduced. Then

Keywords