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A Continuum Damage-Based Anisotropic Hyperelastic Fatigue Model for Short Glass Fiber Reinforced Polyamide 66

Author

Listed:
  • Elouni Chebbi

    (Laboratory of Electrochemistry and Environment (LEE), National Engineering School of Sfax, University of Sfax, Sfax 3038, Tunisia)

  • Lotfi Ben Said

    (Department of Mechanical Engineering, College of Engineering, University of Ha‘il, Ha’il City 2440, Saudi Arabia
    Laboratory of Electrochemistry and Environment (LEE), National Engineering School of Sfax, University of Sfax, Sfax 3038, Tunisia)

  • Badreddine Ayadi

    (Department of Mechanical Engineering, College of Engineering, University of Ha‘il, Ha’il City 2440, Saudi Arabia)

  • Fakhreddine Dammak

    (Laboratory of Electrochemistry and Environment (LEE), National Engineering School of Sfax, University of Sfax, Sfax 3038, Tunisia)

Abstract

A phenomenological 3D anisotropic nonlinear fatigue damage model has been developed for a short glass fiber-reinforced polyamide. The model is formulated within the framework of continuum damage mechanics and is based on a proposed anisotropic hyperelastic strain energy function. The proposed model accounts for the effects of fiber content and nonlinear material behavior. The mechanical behavior of polyamide reinforced with 20% and 30% wt short glass fiber has been experimentally investigated under quasi-static and fatigue loading. Fatigue tests under bending loading are carried out on rectangular specimens cut in the parallel and perpendicular direction to the mold flow direction. The proposed fatigue damage model allows predicting the fatigue damage of composite materials reinforced with short fiberglass, considering fiber orientation and fiber content. The model is used to predict the damage evolution and the number of cycles to failure, and good agreement between predicted values and experimental data is observed.

Suggested Citation

  • Elouni Chebbi & Lotfi Ben Said & Badreddine Ayadi & Fakhreddine Dammak, 2023. "A Continuum Damage-Based Anisotropic Hyperelastic Fatigue Model for Short Glass Fiber Reinforced Polyamide 66," Mathematics, MDPI, vol. 11(6), pages 1-21, March.
    • Handle: RePEc:gam:jmathe:v:11:y:2023:i:6:p:1508-:d:1102409
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    References listed on IDEAS

    as
    1. Lotfi Ben Said & Mondher Wali, 2022. "Accuracy of Variational Formulation to Model the Thermomechanical Problem and to Predict Failure in Metallic Materials," Mathematics, MDPI, vol. 10(19), pages 1-23, September.
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