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. 2013 Feb 4;49(2):744–766. doi: 10.1002/wrcr.20092

Table 2.

Nomenclature of the Mechanical Material Properties

Symbol Meaning Unit
C Biot modulus Pa
Cs Biot modulus at saturation Pa
M Biot modulus Pa
Ms Biot modulus at saturation Pa
α Biot coefficient at saturation Dimensionless
αw Biot coefficient at partial saturation Dimensionless
G=Gfr Shear modulus of the solid frame Pa
K=Kfr Bulk modulus of the solid frame Pa
λ Lamé coefficient Pa
λu Undrained Lamé coefficient Pa
Ka Bulk modulus of the air Pa
Ko Bulk modulus of the oil Pa
Kw Bulk modulus of water Pa
KS Bulk modulus of the solid phase Pa
Kf Bulk modulus of the fluid phase Pa
Ku Undrained bulk modulus Pa