Statistical Analysis of Delamination Effect on Natural Frequency of Composite Laminated Plate

Document Type : Research Article

Authors

Department of Solid Mechanic, Faculty of Mechanical Engineering, University of Kashan, Kashan 87317-51167, Iran

Abstract

This study examines the free vibration behavior of composite laminated plates featuring various delaminated regions and stacking sequences. Utilizing the first-order shear deformation theory (FSDT) in combination with the finite element method, the natural frequencies of these plates are analyzed. Specifically, the investigation considers laminated plates with different numbers, sizes, and geometric arrangements of delaminated regions across several stacking sequences. The numerical results reveal notable trends in how natural frequencies vary and how delamination size affects them, highlighting a strong dependence on the stacking sequence of the layers. Furthermore, the findings demonstrate that the impact of multiple delaminated regions on the natural frequencies is less significant than the cumulative effect of these delaminations concentrated in a single location, with this discrepancy influenced by the frequency order and stacking configurations.

Keywords

Main Subjects

References

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Mechanics of Advanced Composite Structures
Volume 13, Issue 1 - Serial Number 27
In Progress
April 2026
Pages 129-142

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