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(This is the correct table relating different elastic moduli to one another. The table uploaded by Glenda Smith in 2013 has numerous errors.) |
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*Shear modulus, ''μ'', is the ratio of shearing (torsional) stress to shearing strain. | *Shear modulus, ''μ'', is the ratio of shearing (torsional) stress to shearing strain. | ||
*An additional parameter, Poisson’s ratio, ''σ'', is a measure of the geometric change of shape under uniaxial stress. | *An additional parameter, Poisson’s ratio, ''σ'', is a measure of the geometric change of shape under uniaxial stress. | ||
These four elastic parameters are interrelated such that any one can be expressed in terms of two others and can also be expressed in terms of acoustic-wave velocity and density ('''Table 1'''). | These four elastic parameters are interrelated such that any one can be expressed in terms of two others and can also be expressed in terms of acoustic-wave velocity and density ('''Table 1'''). | ||
[[File:Elastic moduli2.jpg|alt=|thumb|Table 1|left]] | |||
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== Computing mechanical rock properties == | == Computing mechanical rock properties == | ||
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