A three-field finite element procedure for analysis of elastic wave propagation through fluid-saturated soils

✍ Scribed by Ranbir S. Sandhu; H.L. Shaw; S.J. Hong

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 632 KB
• Volume: 9
• Category: Article
• ISSN: 0267-7261
• DOI: 10.1016/s0267-7261(05)80019-3

✦ Synopsis

Communicated by W. D. Liam Finn

A three-field mixed finite element procedure for the analysis of wave propagation through fluid-saturated porous soils is presented. This approach uses the solid displacement, the fluid displacement relative to the solid and the pore-fluid pressure as the field variables. Thus, a continuous pore pressure field is ensured and pore pressure boundary conditions, e.g., free-draining surfaces can be easily handled. Application of the procedure to a one-dimensional problem shows good agreement with the analytical solution. However, the method is more expensive than the customary two-field formulation using the solid and the relative fluid displacements as the field variables.