Study on Stability of Explicit Finite Element Method for Wave Motion of Fluid-saturated Porous Media

被引：0
|
作者：
Li Liang [1 ]
Du Xiuli [1 ]
Li Liyun [1 ]
Zhai Wei [1 ]
机构：
[1] Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
来源：
ADVANCED BUILDING MATERIALS, PTS 1-4 | 2011年 / 250-253卷 / 1-4期
关键词：
fluid-saturated porous media; wave motion; time-domain explicit finite element method; stability; transfer matrix;
D O I：
10.4028/www.scientific.net/AMR.250-253.1400
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, the stability of an explicit finite element method for wave motion of fluid-saturated porous media is studied based on the transfer matrix of calculating formula of the method. Transfer factor is defined to describe the stability of the method. The effect of time step, space interval and the value of permeability coefficient on stability is analyzed and practical stability criterion is presented. Research results show that with the increase of time step, the stability of the method will be deteriorated; with the increase of space interval, the stability of the method will be enhanced; with the increase of the value of permeability coefficient, the stability of the method will be enhanced.
引用
收藏
页码：1400 / 1406
页数：7
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