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Hyperelastic model identification from heat source fields

Abstract : In this paper, a new inverse identification method is proposed by coupling full kinematic and thermal field measurements. It consists in reconstructing the heat source from two approaches, a first one that requires the measurement of the temperature field and the value of the thermophysical parameters, and a second one based on the measurement of the kinematics field and a thermo-hyperelastic model that contains the parameters to be identified. The identification does not require any boundary conditions since it is carried out at the local scale. In the present work, the method is applied to the identification of hyperelastic parameters from a heterogeneous heat source field. Due to large deformations undergone by the rubber specimen tested, a motion compensation technique is developed to plot the kinematic and thermal fields at the same points before reconstructing the heat source.
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Submitted on : Wednesday, September 23, 2020 - 11:05:33 PM
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Sylvain Charles, Jean-Benoit Le Cam. Hyperelastic model identification from heat source fields. 11th European Conference on Constitutive Models for Rubber, 2019, Jun 2019, Nantes, France. pp.183-187, ⟨10.1201/9780429324710-33⟩. ⟨hal-02499970⟩

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