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An Extended Bond-Based Peridynamic Approach for Analysis on Fracture in Brittle Materials

Author

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  • Shuang Li
  • Yanli Jin
  • Xiaohua Huang
  • Lianjun Zhai

Abstract

To enhance the calculation accuracy of bond-based peridynamics (BPD), a novel attenuation function is introduced to describe the effect of internal length on nonlocal long-range forces. Furthermore, the expression of the micromodulus function is deduced, and the corresponding fracture criteria are established. The validity and accuracy of the extended bond-based peridynamic approach are illustrated by three numerical examples: 2D isotropic plate under uniaxial loading; plate with a circular cutout under quasi-static loading; and a diagonally loaded square plate with a center pre-existing crack. Finally, the influence of the width and the angle of the pre-existing crack on the fracture initiation time and the crack propagation paths are studied by applying the proposed approach.

Suggested Citation

  • Shuang Li & Yanli Jin & Xiaohua Huang & Lianjun Zhai, 2020. "An Extended Bond-Based Peridynamic Approach for Analysis on Fracture in Brittle Materials," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-12, April.
    • Handle: RePEc:hin:jnlmpe:9568015
    DOI: 10.1155/2020/9568015
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