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INVE_MEM_2012_94797.pdf
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https://oa.upm.es/10467/2/INVE_MEM_2012_94797.pdf
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INVE_MEM_2012_94797.pdf
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Guadalupe Suarez
Viana Lida

Militello
C.

Recuero López
Manuel
Acoustoelastic PureDisplacement Elements Based on Biot's Poromechanics Theory
pub
 industrial
 matematicas
Porous elements; Displacement formulation; Spurious modes; Porous beam; Porous tetrahedron
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.
2012
published
Elsevier B.V.
http://www.sciencedirect.com/science/article/pii/S0045794912000065
10.1016/j.compstruc.2012.01.00
public
Computers and structures
9697
5460
Industriales
Ingenieria_Mecanica
TRUE
00457949
byncnd