The shear modulus, sometimes called the rigidity modulus, refers to the change produced by a tangential stress, and provides a measure of how stiff the material is.
The Shear modulus (G13) result indicates the shear strain applied in the XZ direction, or the direction perpendicular to the fiber orientation direction.
This result is generated from a Fiber orientation Pack analysis using 3D analysis technology.
The thermo-mechanical property calculation for fiber-filled composites are based on the orthotropic assumption, that fiber-filled material properties are different in three orthogonal principal directions. Under this assumption, there are 9 independent mechanical constants and three independent thermal expansion coefficients.