A comparison of two models for the elastic properties of fractured rock
, by Dave Nichols
Models of the elastic properties of fractured rock, those proposed by Hudson and by
Schoenberg are compared and shown to be equivalent. If the corrections to the stiffness
matrix are transformed to the group domain suggested by Schoenberg and Muir they are
greatly simplified. The angular variation of P-wave velocity in fractured rock is controlled
by the relative magnitudes of two parameters in the Schoenberg/Muir group representation
of the fracture system.