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Identification of Hyper-viscoelastic models from one heterogeneous test for elastomers

Abstract : In this work, the identification of Hyper-viscoelastic models of elastomers is performed from only one heterogeneous relaxation experiment performed with a cruciform specimen. The identification procedure is based on the so-called Finite Element Model Updating (FEMU) technique. Even though the experiment induces heterogeneous kinematic fields, only the measured and predicted global force at the specimen edges has been used in the residual to be minimized. The minimization problem has been solved by using of the Inverse-PageRank-Particle Swarm Optimization (I-PR-PSO) algorithm. It has been found that such identification procedure coupled with the heterogeneous relaxation experiment were sufficient to identify both hyperelastic and viscoelastic parameters. The capability of the proposed methodology has been assessed by comparing both kinematic fields and global forces obtained experimentally and by using of the identified parameters. It has been found that the identified parameters predicted well the experiments, even the ones not used in the identification procedure.
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https://hal.archives-ouvertes.fr/hal-03337143
Contributor : Adel Tayeb Connect in order to contact the contributor
Submitted on : Tuesday, September 7, 2021 - 4:13:42 PM
Last modification on : Monday, October 18, 2021 - 4:28:02 PM

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  • HAL Id : hal-03337143, version 1

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Adel Tayeb, N Cesare, Jean-Benoit Le Cam. Identification of Hyper-viscoelastic models from one heterogeneous test for elastomers. BSSM 15th International Conference on Advances in Experimental Mechanics, Sep 2021, Virtual Event, United Kingdom. ⟨hal-03337143⟩

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