Transient response of a cylindrical cavity in viscoelastic saturated porous medium

• Main Authors: LIU Tao, WANG Yuanyuan, ZHU Yuanyuan
• Format: Article
• Language: English
• Published: Academic Journals Center of Shanghai Normal University 2016-10-01
• Series: Journal of Shanghai Normal University (Natural Sciences)
• Subjects: viscoelastic saturated porous medium; porous media theory(PMT); cylindrical cavity; differential quadrature element method(DQEM); transient response
• Online Access: http://qktg.shnu.edu.cn/zrb/shsfqkszrb/ch/reader/create_pdf.aspx?file_no=201605002&flag=1&year_id=2016&quarter_id=5
• ISSN: 1000-5137; 1000-5137

The study on dynamic characteristics for fluid-solid coupling system in saturated porous medium is of significant academic value and potential application foreground.In this paper,the transient response of a cylindrical cavity in infinite viscoelastic saturated porous medium with the circular lining is studied,and the corresponding results can be used in the design of foundation engineering,such as the tunnel analyses in saturated soil,the nuclear waste disposal engineering,and the exploitation and utilization of geothermal reservoirs and so on.Firstly,based on the porous media theory,the governing equations of coupled system are presented,and the corresponding boundary conditions,initial conditions as well as the joint conditions are derived.Then,the differential quadrature element method and the second-order backward difference scheme are applied to discretize the governing differential equations of the coupled system on the spatial and temporal domains,respectively.Finally,the Newton-Raphson method is adopted to solve the discretization equations with the initial conditions,the transient responses of the coupled system are analyzed,the effects of the parameters are considered,and the validity of the numerical method is verified.