Time-dependent response of an axially loaded elastic bar in a multilayered poroelastic medium / T. Senjuntichai in Journal of engineering mechanics, Vol. 133 N°5 (Mai 2007)  

Public ISBD [article]  inJournal of engineering mechanics > Vol. 133 N°5 (Mai 2007) . - pp.578–587. Titre : Time-dependent response of an axially loaded elastic bar in a multilayered poroelastic medium Type de document : texte imprimé Auteurs : T. Senjuntichai, Auteur ; N. Sornpakdee, Auteur ; J. Teerawong, Auteur Année de publication : 2007 Article en page(s) : pp.578–587. Note générale : Applied mechanics Langues : Anglais (eng) Mots-clés : Consolidation Layered systems Piles Poroelasticity Time dependence Résumé : This paper considers load transfer from an axially loaded long elastic bar into a multilayered poroelastic half-space. The problem is analyzed by decomposing the bar-half-space system into an extended half-space governed by Biot’s theory of poroelasticity and a one-dimensional fictitious bar. The interaction problem is formulated in the Laplace transform domain. Vertical displacement of the bar is approximated by an exponential series with a set of arbitrary functions. The arbitrary functions are determined by using a variational method. The vertical displacement influence function of a multilayered half-space subjected to a buried uniform vertical patch load is required in the variational formulation. The required influence function is obtained by employing a previously developed exact stiffness matrix method. Time domain solutions are computed by using a numerical Laplace inversion scheme. Selected numerical results are presented to portray the influence of the bar length–radius ratio, layer configuration, poroelastic material parameters, and loading time history on the time dependent response of a bar. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282007%29133%3A5%2857 [...] [article] Time-dependent response of an axially loaded elastic bar in a multilayered poroelastic medium [texte imprimé] / T. Senjuntichai, Auteur ; N. Sornpakdee, Auteur ; J. Teerawong, Auteur . - 2007 . - pp.578–587. Applied mechanics Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 133 N°5 (Mai 2007) . - pp.578–587. Mots-clés : Consolidation Layered systems Piles Poroelasticity Time dependence Résumé : This paper considers load transfer from an axially loaded long elastic bar into a multilayered poroelastic half-space. The problem is analyzed by decomposing the bar-half-space system into an extended half-space governed by Biot’s theory of poroelasticity and a one-dimensional fictitious bar. The interaction problem is formulated in the Laplace transform domain. Vertical displacement of the bar is approximated by an exponential series with a set of arbitrary functions. The arbitrary functions are determined by using a variational method. The vertical displacement influence function of a multilayered half-space subjected to a buried uniform vertical patch load is required in the variational formulation. The required influence function is obtained by employing a previously developed exact stiffness matrix method. Time domain solutions are computed by using a numerical Laplace inversion scheme. Selected numerical results are presented to portray the influence of the bar length–radius ratio, layer configuration, poroelastic material parameters, and loading time history on the time dependent response of a bar. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282007%29133%3A5%2857 [...]

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