A BEM-FEM convolutional approach to the unilateral contact problem of seismic soil-pipeline interaction

被引:0
|
作者
Liolios, A [1 ]
Pitilakis, K
Yeroyianni, M
机构
[1] Democritus Univ Thrace, Dept Civil Engn, GR-67100 Xanthi, Greece
[2] Aristotelian Univ Salonika, Dept Civil Engn, GR-54006 Salonika, Greece
[3] Commiss European Communities, B-1049 Brussels, Belgium
关键词
coupling FEM and BEM; unilateral contact problems;
D O I
10.1016/S0955-7997(98)00016-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A numerical approach is presented for seismic soil-pipeline interaction considered as an inequality problem of structural engineering. Thus the unilateral contact conditions due to tensionless and elastoplastic softening-fracturing behaviour of the soil as well as gapping are taken into account. The numerical approach is based on a double discretization, on a Laplace transformation of the equality problem conditions to convolutional ones and on mathematical programming. The number of problem unknowns is therefore significantly reduced and a non-convex linear complementarity problem is solved in each time step. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:77 / 81
页数:5
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