Soliton solutions in geometrically nonlinear Cosserat micropolar elasticity with large deformations

Abstract

We study the fully nonlinear dynamical Cosserat micropolar elasticity problem in space with three dimensionals with various energy functionals dependent on the microrotation $\overline{R}$ and the deformation gradient tensor $F$ . We derive a set of coupled nonlinear equations of motion from first principles by varying the complete energy functional. We obtain a double sine-Gordon equation and construct soliton solutions. We show how the solutions can determine the overall deformational behaviour and discuss the relations between wave numbers and wave velocities thereby identifying parameter values where the waves cannot propagate.

arXiv comment17 pages, 6 figures

References in corpus (7)

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• A gauge theoretic approach to elasticity with microrotations
• Rotational elasticity
• Soliton-like solutions based on geometrically nonlinear Cosserat micropolar elasticity
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Cited by in corpus (4)

• Continuum mechanics with torsion
• Chirality in the plane
• Micropolar continua as projective space of Skyrmions
• Characterization of the critical points for the free energy of a Cosserat problem