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Finite strain formulation of viscoelastic damage model for simulation of fabric reinforced polymers under dynamic loading

Abstract : The use of fabric reinforced polymers in the automotive industry is growing significantly. The high specific stiffnessand strength, the ease of shaping as well as the great impact performance of these materials widely encourage their diffusion.The present model increases the predictability of explicit finite element analysis and push the boundaries of the ongoingphenomenological model.Carbon fibre composites made up various preforms were tested by applying different mechanical load up to dynamic loading.This experimental campaign highlighted the physical mechanisms affecting the initial mechanical properties, namely intra- andinterlaminar matrix damage, viscoelasticty and fibre failure.The intralaminar behaviour model is based on the explicit formulation of the matrix damage model developed by the ONERAas the given damage formulation correlates with the experimental observation. Coupling with a Maxwell-Wiechert model, theviscoelasticity is included without losing the direct explicit formulation.Additionally, the model is formulated under a total Lagrangian scheme in order to maintain consistency for finite strain. Thus,the material frame-indifference as well as anisotropy are ensured. This allows reorientation of fibres to be taken into accountparticularly for in-plane shear loading. Moreover, fall within the framework of the total Lagrangian scheme greatly makes theparameter identification easier, as based on the initial configuration.This intralaminar model thus relies upon a physical description of the behaviour of fabric composites and the numericalsimulations show a good correlation with the experimental results
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Submitted on : Friday, April 29, 2022 - 2:36:16 PM
Last modification on : Thursday, August 4, 2022 - 5:19:01 PM
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Sylvain Treutenaere, Franck Lauro, Bruno Bennani, Tsukatada Matsumoto, Ernesto Mottola. Finite strain formulation of viscoelastic damage model for simulation of fabric reinforced polymers under dynamic loading. DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading, Sep 2015, Lugano, Switzerland. pp.04011, ⟨10.1051/epjconf/20159404011⟩. ⟨hal-03433257⟩



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