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Proposal of hyperelastic proportional damping as dissipated energy model of hard rubbers
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SYSNO ASEP 0474714 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Proposal of hyperelastic proportional damping as dissipated energy model of hard rubbers Tvůrce(i) Šulc, Petr (UT-L) RID
Pešek, Luděk (UT-L) RID
Bula, Vítězslav (UT-L) RID
Košina, Jan (UT-L) RID
Cibulka, Jan (UT-L)Zdroj.dok. Engineering Mechanics 2017. - Brno : University of technology, Institute of Solid Mechanics, Mechatronics and Biomechanics, 2017 / Fuis V. - ISSN 1805-8248 - ISBN 978-80-214-5497-2 Rozsah stran s. 942-945 Poč.str. 4 s. Forma vydání Tištěná - P Akce Engineering Mechanics 2017 /23./ Datum konání 15.05.2017 - 18.05.2017 Místo konání Svratka Země CZ - Česká republika Typ akce EUR Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova torsion vibration ; large deformation ; hyperelasticity ; dissipated energy ; deformation energy Vědní obor RIV BI - Akustika a kmity Obor OECD Applied mechanics CEP GA16-04546S GA ČR - Grantová agentura ČR Institucionální podpora UT-L - RVO:61388998 Anotace The paper deals with a stress analysis of hard rubber under large torsion deformations. This study was motivated by effort to find the dependency the dissipated energy on the deformation energy. Based on the results of an experiment, a function of dissipation energy of hard rubbers for finite strains using the theory hyperelasticity was proposed herein analogically as a proportional damping for elastic theory. Samples of hard rubber of different hardness (EPDM, Silicone) were dynamically tested on the developed torsional test-rig at different frequencies, amplitudes. First the Mooney Rivlin model (MRM) for a shear case of loading was analytically developed and then MRM constants were attained by fitting of the MRM to the experimental torsion-deformation curve. These constants were used to obtain the deformation energy of the MRM models. The coefficients of hyperelastic proportional damping relating a dissipated energy to a strain energy were evaluated for tested rubbers on the basis of experimental results. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2018
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