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The natural frequency responses of delaminated composite plates are investigated in this work. A flat laminated panel with defect in the form of delamination is simulated by employing ANSYS. For modeling of the composite panel, shell element with eight nodes is used. First, the convergence and validation study were performed. Further, numerical examples are presented and thoroughly discussed to elucidate the influence of size of the defect, modular ratio, aspect ratio, position and location of damage, and thickness-to-size ratio on the natural frequency of composite flat plates with defects.

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Investigation of Influence of Defect on Natural Frequency of Delaminated Composite Flat Panels Using FEM

  • 会议论文

  • 发表日期：

    2026年

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  • Sudhansu S. Patro,
  • Ashok Kumar Sahoo,
  • Asit Behera,
  • Pruthwiraj Sahu,
  • Ranjan K. Behera

摘要

The natural frequency responses of delaminated composite plates are investigated in this work. A flat laminated panel with defect in the form of delamination is simulated by employing ANSYS. For modeling of the composite panel, shell element with eight nodes is used. First, the convergence and validation study were performed. Further, numerical examples are presented and thoroughly discussed to elucidate the influence of size of the defect, modular ratio, aspect ratio, position and location of damage, and thickness-to-size ratio on the natural frequency of composite flat plates with defects.