Original title: Proposal of hyperelastic proportional damping as dissipated energy model of hard rubbers
Authors: Šulc, Petr ; Pešek, Luděk ; Bula, Vítězslav ; Košina, Jan ; Cibulka, Jan
Document type: Papers
Conference/Event: Engineering Mechanics 2017 /23./, Svratka (CZ), 20170515
Year: 2017
Language: eng
Abstract: 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.
Keywords: deformation energy; dissipated energy; hyperelasticity; large deformation; torsion vibration
Project no.: GA16-04546S (CEP)
Funding provider: GA ČR
Host item entry: Engineering Mechanics 2017, ISBN 978-80-214-5497-2, ISSN 1805-8248

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0273604

Permalink: http://www.nusl.cz/ntk/nusl-363524


The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers