THE SPRING-DASHPOT ARTIFICIAL BOUNDARY OF FLUID-SATURATED POROUS MEDIA

被引：0

作者：

Wang Zihui ^{[1
]}

Shengyun Chunyu ^{[2
]}

机构：

[1] Yantai Univ, Yantai, Peoples R China

[2] Yantai ArchitecturaI Design & Res Co Ltd, Yantai, Peoples R China

来源：

PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON INSPECTION APPRAISAL REPAIRS AND MAINTENANCE OF STRUCTURES, VOLS 1 AND 2 | 2010年

关键词：

Fluid-saturated porous media; Spring-dashpot artificial boundary; Transient analysis; Input wave motions;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Practical civil engineering problems are usually formulated in an infinite half-space domain, and a selected finite domain is required to analyze the dynamic responses of a fluid-saturated porous medium by the finite element method (FEM). Devising a method to deal with the boundaries of the finite domain is the key issue for this open system. In this paper, a two dimensional spring-dashpot artificial boundary (SDAB) for transient analysis in a fluid-saturated porous media is developed. Based on Biot's dynamic theory of fluid-saturated porous media, the normal and tangential boundary stress formulae are deduced for outgoing cylindrical body waves. The boundary stress is proportional to displacement and velocity, thus continuously distributed dashpots and springs can be placed on the artificial boundaries in the normal and tangential directions to simulate the energy absorption of the infinite media outside of the finite domain for the interior distributed source problems.

引用

页码：1183 / +

页数：2