Shear stress divided by shear strain; has the units of force per unit area.
the shear modulus is the initial, linear elastic slope of the stress-strain curve in shear. For isotropic materials it is related to Young's modulus E and to the bulk modulus K and Poissonâ€(tm)s ratio.
The modulus of elasticity for an object exposed to shearing stress. It is expressed as the ratio between / and Ï†, where Ï† (the Greek letter phi) stands for the angle of shear.