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Love numbers of a generalized Maxwell sphere

Spada, Giorgio. 2013 Love numbers of a generalized Maxwell sphere. Studia Geophysica et Geodaetica, 57. 10.1007/s11200-011-0480-9

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Abstract/Summary

By elementary methods, we study the Love numbers of a homogeneous, incompressible, self-gravitating sphere characterized by a generalized Maxwell rheology, whose mechanical analogue is represented by a finite or infinite system of classical Maxwell elements disposed in parallel. Analytical, previously unknown forms of the complex shear modulus for the generalized Maxwell body are found by algebraic manipulation, and studied in the particular case of systems of springs and dashpots whose strength follows a power-law distribution. It will be shown that the sphere is asymptotically stable for any choice of the mechanical parameters that define the generalized Maxwell body and analytical forms of the Love numbers are always available for generalized bodies composed by less than five classical Maxwell bodies. For the homogeneous sphere, real Laplace inversion methods based on the Post-Widder formula can be applied without performing a numerical discretization of the n-th derivative, which can be computed in a closed-form with the aid of the Faà di Bruno formula.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1007/s11200-011-0480-9
Programmes: BAS Programmes > EU:Ice2Sea
ISSN: 0039-3169
Additional Keywords: linear viscoelasticity, generalized Maxwell rheology, Love numbers
Date made live: 07 Dec 2012 14:28
URI: http://nora.nerc.ac.uk/id/eprint/20743

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