The integral constitutive equations of a multipolar viscoelastic material are analyzed from the thermodynamic point of view. They are shown to be approximated by those of the differential-type viscous materials when the processes are slow. As a consequence of the thermodynamic compatibility of the viscoelastic model, the coefficients of viscosity of the approximate viscous model are shown to have an Onsager-type symmetry. This symmetry was employed earlier in the proof of the existence of solutions for the corresponding equations.
@article{104518, author = {Miroslav \v Silhav\'y}, title = {Multipolar viscoelastic materials and the symmetry of the coefficients of viscosity}, journal = {Applications of Mathematics}, volume = {37}, year = {1992}, pages = {383-400}, zbl = {0770.73031}, mrnumber = {1175932}, language = {en}, url = {http://dml.mathdoc.fr/item/104518} }
Šilhavý, Miroslav. Multipolar viscoelastic materials and the symmetry of the coefficients of viscosity. Applications of Mathematics, Tome 37 (1992) pp. 383-400. http://gdmltest.u-ga.fr/item/104518/
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