Using solid elements in the commercial code ANSYS/LS-DYNA, a finite element model of two-dimensional triaxially braided composites(2DTriBCs) on a macro-scale is developed. This model employs a widely used unit cell-based approach, and each unit cell is divided into six subcells. To investigate the inter-delamination, a simplified surface-based cohesive model is established and a self-compiled post-progressing program is developed which can generate a series of figures indicating the evolution process of damage morphology and quantify the area of inter-delamination vividly. In order to validate this model, four types of 2DTriBCs with braiding angle 30, 45, 60, and 75 degree are modelled and sbjected to flat-nose and hemispherical-nose cylindrical projectiles with the equivalent mass, respectively. Results show that the braiding angle is a key element in the material response and 45 degree braiding angle architecture is more balanced in all directions due to quasi-isotropic property and has comparatively small inter-delamination area.


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    Title :

    A simplified delamination modelling methodology for triaxial braided composites with macro-scale solid finite-element models


    Contributors:
    Tan, Huancheng (author) / Liu, Lulu (author) / Guan, Yupu (author) / Chen, Wei (author) / Zhao, Zhenhua (author)

    Published in:

    Publication date :

    2019-01-02


    Size :

    17 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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