Dynamic tensile experiments of hard rubber on instron test machine under finite deformations

0578916 - ÚT 2024 CZ eng C - Conference Paper (international conference)
Šulc, Petr - Pešek, Luděk - Bula, Vítězslav - Šnábl, Pavel
Dynamic tensile experiments of hard rubber on instron test machine under finite deformations.
Engineering mechanics 2023. Book of full texts. Prague: Institute of Thermomechanics of the Czech Academy of Sciences, 2023 - (Radolf, V.; Zolotarev, I.), s. 255-259. Engineering mechanics, 29. ISBN 978-80-87012-84-0. ISSN 1805-8248. E-ISSN 1805-8256.
[Engineering Mechanics 2023 /29./. Milovy (CZ), 09.05.2023-11.05.2023]
Institutional support: RVO:61388998
Keywords : uniaxial harmonic loading * finite deformation * second Piola-Kirchhoff stress * hysteresis loop * Green-Lagrange strain tensor
OECD category: Applied mechanics

This paper deals with the first experimental tests of hard rubbers under tensile harmonic loading on the axial-torsional servohydraulic Instron 8852 test machine. The objective of these experiments on cylindrical rubber specimens on this machine is to obtain stress-strain curves of rubber specimens, first considering uniaxial finite longitudinal strains for a single load cycle. Next, the hysteresis loops and their skeleton curves are compared for two selected strain measures as a function of their conjugate stress. It is shown how to obtain the dependence between elongation in the axial direction and constriction in the radial direction, which is used to determine the Cauchy stress in this configuration.
Permanent Link: https://hdl.handle.net/11104/0348151