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Article Dans Une Revue Journal of the mechanical behavior of biomedical materials Année : 2023

Modelling and validation of the non-linear elastic stress–strain behaviour of multi-layer silicone composites

Résumé

Multi-layer silicone composites are commonly used to mold deformable silicone vocal folds replicas. Nevertheless, so far the stress-strain characterisation of such composite specimens is limited to their effective Young's modulus (up to 40 kPa) characterising the elastic low-strain range, i.e. up to about 0.3. Therefore, in this work, the characterisation is extended to account for the non-linear strain range. Stress-strain curves on 6 single-layer and 34 multi-layer silicone specimens, with different layer stacking (serial, parallel, combined or arbitrary), are measured at room temperature using uni-axial tensile tests for strains up to 1.36, which amounts to about 4.5 times the extent of the linear low-strain range. Cubic polynomial and exponential two-parameter relationships are shown to provide accurate continuous fits (coefficient of determination R 2 ≥ 99%) of the measured stress-strain data.
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Dates et versions

hal-03959890 , version 1 (27-01-2023)

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Mohammad Ahmad, Xavier Pelorson, Oriol Guasch, Ana Inés Fernández, Annemie van Hirtum. Modelling and validation of the non-linear elastic stress–strain behaviour of multi-layer silicone composites. Journal of the mechanical behavior of biomedical materials, 2023, pp.105690. ⟨10.1016/j.jmbbm.2023.105690⟩. ⟨hal-03959890⟩
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