A comparative study of deformation field due to center of dilatation and center of rotation in a viscoelastic half-space model

Publication date: Available online 17 January 2020Source: Physics of the Earth and Planetary InteriorsAuthor(s): Nishu Verma, Kuldip SinghAbstractClosed-form analytic expressions for the displacement and stress fields due to two axially symmetric sources, namely, the center of dilatation, and center of rotation in an elastic half-space are obtained using Galerkin vector approach. The correspondence principle of linear viscoelasticity is used to obtain the viscoelastic displacement and stress fields. A comparative study of both these sources has been done graphically. Our analysis revealed that the center of dilatation is more efficient than the center of rotation in generating radial displacement. The results are valid for arbitrary values of the Poisson's ratio and relaxation time.

Source: Physics of the Earth and Planetary Interiors - January 18, 2020 Category: Physics Source Type: research