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Determination of dissipated energy fields from temperature mappings on a rubber-like structural sample: Experiments and comparison to numerical simulations

Isaure Masquelier 1 Yann Marco 1 Vincent Le Saux 1 Sylvain Calloch 1 Pierre Charrier 2
1 MMA
LBMS - Laboratoire brestois de mécanique et des systèmes
Abstract : The main goal of this paper is to provide an experimental way to deduce the field of dissipated energy from the measurement of the temperature field. The case studied is a structural sample (i.e. with a circular notch) in order to test the ability of the protocol to describe heterogeneous energy fields. The material chosen is a filled synthetic elastomer in order to investigate the case of large displacements. Moreover, very thin samples are used to reduce the solving of the thermo-mechanical problem to a 2D investigation. To reach high enough spatial and thermal resolutions the protocol suggested takes advantage of the low thermal conductivity of the material and of a very precise calibration of the infrared camera used to record the temperature fields. The paper suggests a protocol based on an adiabatic assumption and investigates its capabilities and range of validity. A very accurate description of the severe gradients of the fields of dissipated energy can be obtained. In order to evaluate the reliability of the experimental fields, a numerical approach is applied using a simple yet robust dissipation modelling. Finally, the experimental fields of displacement and of dissipated energy are compared with the ones obtained from the numerical simulation.
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https://hal.archives-ouvertes.fr/hal-01108260
Contributor : Nathalie Leal <>
Submitted on : Thursday, January 22, 2015 - 2:14:49 PM
Last modification on : Tuesday, December 15, 2020 - 11:20:57 AM

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Isaure Masquelier, Yann Marco, Vincent Le Saux, Sylvain Calloch, Pierre Charrier. Determination of dissipated energy fields from temperature mappings on a rubber-like structural sample: Experiments and comparison to numerical simulations. Mechanics of Materials, Elsevier, 2015, 80 (Part A), pp.113-123. ⟨10.1016/j.mechmat.2014.09.010⟩. ⟨hal-01108260⟩

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