A dynamic material point method for geomechanics

被引：0
|
作者：
Jassim, I. [1 ]
Coetzee, C. [2 ]
Vermeer, P. A. [3 ,4 ]
机构：
[1] Univ Stuttgart, Inst Geotech, Stuttgart, Germany
[2] Univ Stellenbosch, Dept Engn Mech, ZA-7600 Stellenbosch, South Africa
[3] Univ Stuttgart, Stuttgart, Germany
[4] Deltares, Delft, Netherlands
来源：
INSTALLATION EFFECTS IN GEOTECHNICAL ENGINEERING | 2013年
关键词：
IN-CELL METHOD;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A dynamic Material Point Method for use in Geomechanics is presented. Soil and structural bodies are represented by (material) particles, which move inside an unstructured mesh of four-noded 3-D tetrahedral elements. As such low-order elements tend to show locking for fully developed plastic flow, a strain-enhancement remedy is described. As a first example, the penetration of a drop anchor into a Mohr-Coulomb soil is considered. As both a soil body and a metal anchor are considered, an algorithm for dynamic contact is used and described. An improved type of absorbing boundaries to avoid the reflection of stress waves is also described. The second example consists of dynamic cone penetration. Finally, the example of a collapsing tunnel is considered.
引用
收藏
页码：15 / 23
页数：9
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