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arXiv · 1407.8294

Complex order fractional derivatives in viscoelasticity

Teodor M. Atanacković·Sanja Konjik·Stevan Pilipović·Dušan Zorica
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Abstract

We introduce complex order fractional derivatives in models that describe viscoelastic materials. This can not be carried out unrestrictedly, and therefore we derive, for the first time, real valued compatibility constraints, as well as physical constraints that lead to acceptable models. As a result, we introduce a new form of complex order fractional derivative. Also, we consider a fractional differential equation with complex derivatives, and study its solvability. Results obtained for stress relaxation and creep are illustrated by several numerical examples.

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Teodor M. Atanacković, Sanja Konjik, Stevan Pilipović, Dušan Zorica. 2016-05-07. Complex order fractional derivatives in viscoelasticity. https://arxiv.org/abs/1407.8294

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