Torsion of Nonhomogeneous Solid

A solution is given for the Reissner-Sagoci problem for a nonhomogeneous half-space and semi-infinite cylinder in each of which the shear modulus is assumed to vary with the depth. The formulation is reduced to Fredholm integral equations of the second kind. Numerical results have been presented for the physical quantities of interest. Some of these results indicate a marked difference from the corresponding response of a homogeneous isotropic solid. The analysis also reveals that the classical square root singularity in the shear stresses retains this order in the nonhomogeneous solid under consideration in contrast with a material possessing a modulus, in which the singularity is a function of a constant.