title: Acoustoelastic Pure-Displacement Elements Based on Biot's Poromechanics Theory
creator: Guadalupe Suarez, Viana Lida
creator: Militello, C.
creator: Recuero López, Manuel
subject: Industrial Engineering
subject: Mathematics
description: 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.
publisher: E.T.S.I. Industriales (UPM)
rights: https://creativecommons.org/licenses/by-nc-nd/3.0/es/
date: 2012
type: info:eu-repo/semantics/article
type: Article
source: Computers and structures, ISSN 0045-7949, 2012, Vol. 96-97
type: PeerReviewed
format: application/pdf
language: eng
relation: http://www.sciencedirect.com/science/article/pii/S0045794912000065
rights: info:eu-repo/semantics/openAccess
relation: info:eu-repo/semantics/altIdentifier/doi/10.1016/j.compstruc.2012.01.00
identifier: https://oa.upm.es/10467/