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dc.contributor.authorŠulc, Petr
dc.contributor.authorPešek, Luděk
dc.contributor.authorBula, Vítězslav
dc.contributor.authorKošina, Jan
dc.contributor.authorCibulka, Jan
dc.identifier.citationApplied and Computational Mechanics. 2018, vol. 12, no. 1, p. 111-118.en
dc.identifier.issn1802-680X (Print)
dc.identifier.issn2336-1182 (Online)
dc.description.abstractIn this paper, we are proposing a new formulation of dissipated energy of hard rubbers as a function of the deformation energy expressed by the Yeoh hyperelastic model. Torsion deformation is considered as a planar deformation of a simple shear on the surface of a cylinder. Thus the deformation energy is dependent only on the first invariant of strain. Based on the experiment, a “hyperelastic proportional damping” (HPD) is proposed for hard rubbers under finite strains. Such damping is analogical to the model of proportional damping in the linear theory of viscoelasticity, i.e. the dissipated energy is proportional to the deformation energymultiplied by the frequency of dynamic harmonic loading. To obtain the experimental data, samples of hard EPDM rubbers of different harnesses were dynamically tested on a torsional test rig for different frequencies and amplitudes. The Yeoh model is chosen since the deformation function is dependent only on the first strain invariant for the description of the simple shear of a surface cylinder. The Yeoh constants are evaluated by curve fitting of the analytical stress function to the experimental torsion stress-deformation curve. The constants are used to express the deformation energy of the Yeoh model for specific cases of tested rubbers. The coefficients of hyperelastic proportional damping are evaluated on the basis of experimental results.en
dc.format8 s.
dc.publisherUniversity of West Bohemiaen
dc.relation.ispartofseriesApplied and Computational Mechanicsen
dc.rights© 2018 University of West Bohemia. All rights reserved.en
dc.subjectprvní invariantní kmencs
dc.subjectjednoduchý smykcs
dc.subjectmodel Yeohcs
dc.subjectrozptýlená energiecs
dc.subjectdeformační energiecs
dc.titleTorsion dissipated energy of hard rubbers as function of hyperelastic deformation energy of the Yeoh modelen
dc.subject.translatedfirst strain invarianten
dc.subject.translatedsimple shearen
dc.subject.translatedYeoh modelen
dc.subject.translateddissipated energyen
dc.subject.translateddeformation energyen
Appears in Collections:Volume 12, number 1 (2018)
Články / Articles (KME)
Volume 12, number 1 (2018)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/31337

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