Hi:
All I know is that if you go into more depth from Hooke's law into plane stress or plane strain conditions, the inverse of the material stiffness matrix is the material compliance!
However, what is fracture compliance? How is it different than just the regular compliance of materials?
Thank you very much,
Mousumi Ghosh
Fracture compliance is basically a reciprocal of Fracture stiffness.
Fracture stiffness is the ratio of the increment of stress to the increment of displacement caused by the deformation of the void space in the fracture.
Reference : Pyrak-Nolte LJ, Morris JP. Single fractures under normal stress: The relation between fracture specific stiffness and fluid flow. International Journal of Rock Mechanics and Mining Sciences. 2000 Jan 1;37(1-2):245-62.
Note: Fracture stiffness depends on geometry as well.
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