Abstract
We discuss the material symmetry group of the polar-elastic continuum and related consistently simplified constitutive equations. Following [1] we extent the definition of the group proposed by Eringen and Kafadar [2] by taking into account the microstructure curvature tensor as well as different transformation properties of polar and axial tensors. Our material symmetry group consists of ordered triples of tensors which make the strain energy density of the polar-elastic continuum invariant under change of the reference placement. Within the polar-elastic solids we discuss the isotropic, hemitropic, orthotropic, transversely isotropic and cubic-symmetric materials and give explicitly the consistently reduced representations of the strain energy density.
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Acknowledgments
The first author was supported by the DFG grant No. AL 341/33-1 and by the RFBR with the grant No. 12-01-00038.
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Eremeyev, V.A., Pietraszkiewicz, W. (2013). Material Symmetry Group and Consistently Reduced Constitutive Equations of the Elastic Cosserat Continuum. In: Altenbach, H., Forest, S., Krivtsov, A. (eds) Generalized Continua as Models for Materials. Advanced Structured Materials, vol 22. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-36394-8_5
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