An Analytical Modeling for Linearly Viscoelastic Functionally Graded Solids by Considering Separable Relaxation Functions in Space and Time

چکیده مقاله

Functionally Graded Materials (FGMs) are the special composite materials usually made from both ceramics and metals. A few models for functionally graded viscoelastic materials are presented and discussed in the literature. The present study introduces an extension of the elastic-viscoelastic correspondence principle (as applied to the homogeneous viscoelasticity theory) to nonhomogenous viscoelastic solids under assumption that the relaxation functions are separable functions in space and time