首页|Poroelastodynamic responses and elastic moduli of a transversely isotropic porous cylinder under forced deformation test
Poroelastodynamic responses and elastic moduli of a transversely isotropic porous cylinder under forced deformation test
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Existing transversely isotropic poroelastodynamics solutions are limited to infinite domains and without experimental validation. Furthermore, there is a lack of analytical simulations for the elastic moduli dis-persion of fluid-saturated porous cylinders. To address these three limitations and investigate the mech-anisms of moduli dispersion, we present the analytical solutions of the poromechanical responses and the elastic moduli dispersion of a transversely isotropic, fluid-saturated, finite porous cylinder subjected to a forced deformation test. Through an example, we demonstrate the effects of loading frequency, boundary conditions, and material's anisotropy, dimension, and permeability on the responses of pore pressure, force, displacement, and dynamic elastic moduli of the cylinder. The specimen's responses are signifi-cantly influenced by the frequency of the applied load, resulting in a drained state at low frequencies and an undrained state at high frequencies. At high frequencies, the sample behaves identically for an open or a closed lateral boundary, and permeability has insignificant effects. The dynamic elastic moduli are mainly controlled by the loading frequency and the ratio of the sample's radius to its height. Lastly, we show excellent matches between the newly derived analytical solution and laboratory measurements on one clay and two shale samples from Mont Terri.
PoroelastodynamicsDynamic moduliTransversely isotropicPorous cylinderForced deformation test
Chao Liu、Dung T.Phan
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Aramco Americas:Aramco Research Center—Houston, Houston TX 77084, USA
NETL
NSTL
万方数据
维普
