Acoustoelastic Pure-Displacement Elements Based on Biot's Poromechanics Theory

Guadalupe Suarez, Viana Lida and Militello, C. and Recuero López, Manuel (2012). Acoustoelastic Pure-Displacement Elements Based on Biot's Poromechanics Theory. "Computers and structures", v. 96-97 ; pp. 54-60. ISSN 0045-7949. https://doi.org/10.1016/j.compstruc.2012.01.00.

Description

Title: Acoustoelastic Pure-Displacement Elements Based on Biot's Poromechanics Theory
Author/s:
  • Guadalupe Suarez, Viana Lida
  • Militello, C.
  • Recuero López, Manuel
Item Type: Article
Título de Revista/Publicación: Computers and structures
Date: 2012
ISSN: 0045-7949
Volume: 96-97
Subjects:
Freetext Keywords: Porous elements; Displacement formulation; Spurious modes; Porous beam; Porous tetrahedron
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Mecánica y de Fabricación [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

From the elastic energy contained in a displacement based porous material the general form of the stiffness and mass matrices are obtained. If both fields can be expanded with equal order polynomials the general form is further simplified and it is shown that the coupling stiffness reduces to the one arising to compute volume changes in an elastic medium. A plane beam and a four node tetrahedron are developed. To avoid spurious rotational modes appearance in the tetrahedron fluid a penalty formulation is used. The effect of the penalty factor in matrix conditioning is analysed. Elements dynamic behaviour is compared.

More information

Item ID: 10467
DC Identifier: http://oa.upm.es/10467/
OAI Identifier: oai:oa.upm.es:10467
DOI: 10.1016/j.compstruc.2012.01.00
Official URL: http://www.sciencedirect.com/science/article/pii/S0045794912000065
Deposited by: Memoria Investigacion
Deposited on: 07 Mar 2012 08:58
Last Modified: 20 Apr 2016 18:40
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