Testing of HPD model of dissipated energy of hard rubbers at torsional finite Deformations and temperatures

0511121 - ÚT 2020 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Šulc, Petr - Pešek, Luděk - Bula, Vítězslav - Šnábl, Pavel
Testing of HPD model of dissipated energy of hard rubbers at torsional finite Deformations and temperatures.
Engineering mechanics 2019. Book of full texts. Prague: Institute of Thermomechanics of the Czech Academy of Sciences, 2019 - (Zolotarev, I.; Radolf, V.), s. 367-370. ISBN 978-80-87012-71-0. ISSN 1805-8248.
[Engineering mechanics 2019 /25./. Svratka (CZ), 13.05.2019-16.05.2019]
Grant CEP: GA TA ČR(CZ) TF06000020
Institucionální podpora: RVO:61388998
Klíčová slova: dissipated energy * hysteresis loop * temperature dependence * hyperelasticity * deformation energy
Obor OECD: Applied mechanics

This paper deals with the temperature dependence of hard rubber behavior on torsional harmonic loading. This behavior was described by dissipated and deformation energy of the rubber. This knowledge was used to test the validity of the hyperelastic proportional damping (HPD) in dependence on temperature and finite deformations. From the experiments, the dissipated energy was obtained from the hysteresis loop in one period of harmonic load, depending on the temperature for the given frequency. The deformation energy was determined from the shear stress analysis on the surface of the cylinder considering hyperelasticity. The constants of these models were obtained by optimizing the stress-strain curve from the shear analysis on the cylinder surface. With this optimization, the Yeoh hyperelastic model was chosen.
Trvalý link: http://hdl.handle.net/11104/0302591