%0 Journal Article
%T Determination of dissipated energy fields from temperature mappings on a rubber-like structural sample: Experiments and comparison to numerical simulations
%+ MMA
%+ TrelleborgVibracoustic
%A Masquelier, Isaure
%A Marco, Yann
%A Le Saux, V.
%A Calloch, Sylvain
%A Charrier, Pierre
%< avec comité de lecture
%@ 0167-6636
%J Mechanics of Materials
%I Elsevier
%V 80
%N Part A
%P 113-123
%8 2015-01
%D 2015
%R 10.1016/j.mechmat.2014.09.010
%K Cyclic loading
%K Heat build-up
%K Elastomers
%K IR full field measurements
%Z Engineering Sciences [physics]Journal articles
%X 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.
%G English
%L hal-01108260
%U https://hal.science/hal-01108260
%~ UNIV-BREST
%~ ENSTA-BRETAGNE
%~ ENSTA-BRETAGNE-LBMS
%~ ENIB
%~ ENSTA-BRETAGNE-MECA