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1D infinite element for dynamic problems in saturated porous media

✍ Scribed by Khalili, N. ;Valliappan, S. ;Yazdi, J. Tabatabaee ;Yazdchi, M.

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
169 KB
Volume
13
Category
Article
ISSN
1069-8299

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✦ Synopsis

A fully coupled 1D in®nite element for frequency domain analysis of wave propagation problems in unbounded saturated porous media is presented. The element wave propagation function is derived using an analytical solution for Biot's formulation (1962). The eectiveness and the accuracy of the in®nite element proposed are demonstrated through a simple wave propagation problem in a semi-in®nite soil column subjected to a harmonic surface loading. It is shown that an accurate representation of the problem can be obtained by coupling the conventional ®nite elements with the proposed in®nite element. The accuracy of the solution signi®cantly deteriorates when free or ®xed boundary conditions are imposed at the truncated boundary instead of the in®nite element.

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