A simplified 3D model for soil-structure interaction with radiation damping and...

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A simplified 3D model for soil-structure interaction with radiation damping and free field input

Author: V. Saouma · F. Miura · G. Lebon · Y. Yagome | Size: 701 KB | Format: PDF | Publisher: Bull Earthquake Eng | Year: 2011 | pages: 16

Bull Earthquake Eng
DOI 10.1007/s10518-011-9261-7
ORIGINAL RESEARCH PAPER

A simplified 3D model for soil-structure interaction with radiation damping and free field input

V. Saouma · F. Miura · G. Lebon · Y. Yagome

Received: 25 August 2010 / Accepted: 22 March 2011
© Springer Science+Business Media B.V. 2011

Abstract:

This paper addresses the time history finite element analysis of rock-structure interaction. Modeled is not only the lateral energy dissipation, but also the interaction between the far field and the numerical model itself. This is accomplished by a preliminary analysis of the far field as a shear beam (for lateral excitation), and then velocities and displacements are transferred to the model as nodal forces through damping and stiffness matrices respectively. Details of the finite element implementation are given, along with an extensive series of simulations comparing this method, with the one of Lysmer for both 2D and 3D models. The model is derived from the principle of virtual work, and its implementation does not require any modification of existing finite element codes, only clever pre and postprocessing of results are needed.

Code:

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