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Multi-Scale Modelling of Post-Impact Healing in Fibre Reinforced Polymer Composite Structures (CROSBI ID 720750)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Brezetić, Dominik ; Smojver, Ivica ; Ivančević, Darko Multi-Scale Modelling of Post-Impact Healing in Fibre Reinforced Polymer Composite Structures. 2022

Podaci o odgovornosti

Brezetić, Dominik ; Smojver, Ivica ; Ivančević, Darko

engleski

Multi-Scale Modelling of Post-Impact Healing in Fibre Reinforced Polymer Composite Structures

A multi-scale framework for modelling of fibre reinforced polymer composite structures with intrinsic self-healing ability is presented in this work. At the microscale, matrix constituent is modelled using the micro-damage-healing constitutive model developed and validated in [1]. In this model damage variable reduces the material’s elasticity modulus, whereas the healing variable causes its restoration. Reinforcing fibres are considered transversely isotropic and linear elastic. Hashin failure criterion and progressive damage model are used for modelling of fibre failure and post-failure behaviour. Rule of Mixtures equations for homogenised mechanical properties are used as a means of homogenisation. On the other hand, the Voigt and Reuss approximations for the strain tensor are applied to perform the localisation. The Voigt (iso-strain) approximation is used in the direction of the reinforcing fibres, whereas the Reuss (iso-stress) approximation is used at other components of the strain tensor. In [2] the aforementioned model was implemented into the Abaqus/Standard user material subroutine UMAT and validated with experimental results of the three-point flexural tests. Inhere, the model is implemented into the Abaqus/Explicit user material subroutine VUMAT and is validated with experimental results of the low-velocity impact (LVI) tests, available in [3]. Composite plates consisted of woven glass fibres as reinforcements and a polymer blend as the matrix constituent. The blend consisted of diglycidyl ether bisphenol A (DGEBA) epoxy resin and poly(ε- caprolactone) thermoplastic polymer. Woven fibre warp and weft yarns are approximated with unidirectional plies. The impact is simulated in Abaqus/Explicit using the VUMAT subroutine, whereas the healing is simulated in Abaqus/Standard using the UMAT subroutine, validated in [2]. Preliminary results are presented in Figure 1 where experimentally obtained and simulated contact forces between the composite plate and the impactor are compared. Validation proved the model’s applicability to simulate healing of micro-damage induced during a low-velocity impact. Provided that the proper set of parameters is used, the model could be used for simulation of other types of composite structures with intrinsic self-healing ability. References: [1] Smojver, Ivica ; Ivančević, Darko ; Brezetić, Dominik ; Haramina, Tatjana (2022): Constitutive modelling of a self-healing composite matrix polymer material. In International Journal of Damage Mechanics, 0(0): 1-18. [2] Smojver, Ivica ; Ivančević, Darko ; Brezetić, Dominik (2022): Modelling of micro-damage and intrinsic self-healing in unidirectional CFRP composite structures. In Composite Structures, 286: 1-10 [3] Cohades A, Michaud V. Damage recovery after impact in E-glass reinforced poly(ε- caprolactone)/epoxy blends. Composite Structures. (2017) 180: 439–447.

Abaqus/Explicit & Standard ; multi-scale constitutive model ; Rule of Mixtures ; fibre reinforced polymer composites ; micro-damage ; healing

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Podaci o prilogu

61686

2022.

objavljeno

Podaci o matičnoj publikaciji

Podaci o skupu

The 20th European Conference on Composite Materials

predavanje

26.06.2022-30.06.2022

Lausanne, Švicarska

Povezanost rada

Zrakoplovstvo, raketna i svemirska tehnika

Poveznice