Number of the records: 1
Dissipated energy of hard rubbers at dynamic torsional finite straining
- 1.
SYSNO ASEP 0479131 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Dissipated energy of hard rubbers at dynamic torsional finite straining Author(s) Šulc, Petr (UT-L) RID
Pešek, Luděk (UT-L) RID
Bula, Vítězslav (UT-L) RID
Cibulka, Jan (UT-L)
Košina, Jan (UT-L) RIDNumber of authors 5 Source Title DYNAMESI 2017. - Praha : Institute of Thermomechanics CAS, v. v. i., 2017 - ISBN 978-80-87012-62-8 Pages s. 115-122 Number of pages 6 s. Publication form Print - P Action DYMAMESI 2017 Event date 28.02.2017 - 01.03.2017 VEvent location Crakow Country PL - Poland Event type EUR Language eng - English Country CZ - Czech Republic Keywords hard rubber ; torsion vibration ; large deformation Subject RIV BI - Acoustics OECD category Applied mechanics Institutional support UT-L - RVO:61388998 Annotation 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 prportional damping for elastic theory. Samples of hard rubber of different hardness (EPDM, Silcone) 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. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2018
Number of the records: 1