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    • 39-Issue 7
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    • Volume 39 (2020)
    • 39-Issue 7
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    Fracture Patterns Design for Anisotropic Models with the Material Point Method

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    Date
    2020
    Author
    Cao, Wei ORCID
    Lyu, Luan
    Ren, Xiaohua
    Zhang, Bob
    Yang, Zhixin
    Wu, Enhua
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    Abstract
    Physically plausible fracture animation is a challenging topic in computer graphics. Most of the existing approaches focus on the fracture of isotropic materials. We proposed a frame-field method for the design of anisotropic brittle fracture patterns. In this case, the material anisotropy is determined by two parts: anisotropic elastic deformation and anisotropic damage mechanics. For the elastic deformation, we reformulate the constitutive model of hyperelastic materials to achieve anisotropy by adding additional energy density functions in particular directions. For the damage evolution, we propose an improved phasefield fracture method to simulate the anisotropy by designing a deformation-aware second-order structural tensor. These two parts can present elastic anisotropy and fractured anisotropy independently, or they can be well coupled together to exhibit rich crack effects. To ensure the flexibility of simulation, we further introduce a frame-field concept to assist in setting local anisotropy, similar to the fiber orientation of textiles. For the discretization of the deformable object, we adopt a novel Material Point Method(MPM) according to its fracture-friendly nature. We also give some design criteria for anisotropic models through comparative analysis. Experiments show that our anisotropic method is able to be well integrated with the MPM scheme for simulating the dynamic fracture behavior of anisotropic materials.
    BibTeX
    @article {10.1111:cgf.14129,
    journal = {Computer Graphics Forum},
    title = {{Fracture Patterns Design for Anisotropic Models with the Material Point Method}},
    author = {Cao, Wei and Lyu, Luan and Ren, Xiaohua and Zhang, Bob and Yang, Zhixin and Wu, Enhua},
    year = {2020},
    publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
    ISSN = {1467-8659},
    DOI = {10.1111/cgf.14129}
    }
    URI
    https://doi.org/10.1111/cgf.14129
    https://diglib.eg.org:443/handle/10.1111/cgf14129
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    Eurographics Association copyright © 2013 - 2023 
    Send Feedback | Contact - Imprint | Data Privacy Policy | Disable Google Analytics
    Theme by @mire NV
    System hosted at  Graz University of Technology.
    TUGFhA