Adaptive finite element analysis of multi-phase problems in geotechnics

被引：13
作者：
Stelzer, R [1 ]
Hofstetter, G [1 ]
机构：
[1] Univ Innsbruck, Inst Struct Anal & Strength Mat, A-6020 Innsbruck, Austria
来源：
COMPUTERS AND GEOTECHNICS | 2005年 / 32卷 / 06期
基金：
奥地利科学基金会;
关键词：
finite element method; adaptivity; multi-phase medium; coupled problem; error estimation; geotechnics; dewatering; compressed air; partially saturated soil; water-saturated soil;
D O I：
10.1016/j.compgeo.2005.06.003
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Adaptive FE solution strategies for coupled two-phase and three-phase problems involving porous soils with the pore space filled with water and/or (compressed) air are presented. The errors are estimated by applying the well-known Zienkiewicz-Zhu error estimator to each phase. The mesh is improved by mesh regeneration from scratch employing the advancing front method. Two different adaptive strategies, based on the error estimation either of incremental or total quantities, are pursued. The developed adaptive strategies are applied to the numerical simulation of a laboratory test and a full-scale in situ test, considering the flow of compressed air in an elastic deformable soil skeleton. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：458 / 481
页数：24
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