WebNov 8, 2024 · The Biot-Willis coefficients are bounded between zero and one by construction: \(0 < \alpha _i \le 1\). We also assume that the hydraulic conductances \(K_i > 0\) for \(i = 1, \dots , n\). Further, our focus will be on the case \(\nu _i> 0\). For spatially-varying material parameters, we assume that each of the above conditions holds point … WebOct 14, 2014 · Some of the poroelastic parameters increase and the others decrease with the effective stress, where the effective stress dependency is much more significant at effective stresses of < 10MPa. The remarkable difference between the results of the two sandstones is inverse effective stress dependencies in Biot-Willis coefficient, which may …
Correction to: Parameterization of Biot–Willis Effective‑Stress ...
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Resolving Wave Propagation in Anisotropic Poroelastic Media …
WebMar 6, 2024 · The Biot-Willis parameter can be obtained under unjacketed experiments, in which an increase in the total pressure is equal to the increase in fluid pressure : (, see Equation ). For more information about how to measure poroelastic constants in rock samples, we refer to R. W. Zimmerman . Appendix C: An Alternative Dimensional … http://duoduokou.com/python/50806427637233181835.html WebSkempton’s coefficient (ratio of pore pressure increment to mean stress increment under undrained conditions) and the Biot-Willis parameter serve equally well for the undrained bulk modulus and Poisson’s ratio, because they permit the drained and undrained moduli to be related to each other. eyeglass wipes for tv screen