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Wave Propagation Analysis in Composite Laminates Containing a Delamination Using a Three-Dimensional Spectral Element Method

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  • Fucai Li
  • Haikuo Peng
  • Xuewei Sun
  • Jinfu Wang
  • Guang Meng

Abstract

A three-dimensional spectral element method (SEM) was developed for analysis of Lamb wave propagation in composite laminates containing a delamination. SEM is more efficient in simulating wave propagation in structures than conventional finite element method (FEM) because of its unique diagonal form of the mass matrix. Three types of composite laminates, namely, unidirectional-ply laminates, cross-ply laminates, and angle-ply laminates are modeled using three-dimensional spectral finite elements. Wave propagation characteristics in intact composite laminates are investigated, and the effectiveness of the method is validated by comparison of the simulation results with analytical solutions based on transfer matrix method. Different Lamb wave mode interactions with delamination are evaluated, and it is demonstrated that symmetric Lamb wave mode may be insensitive to delamination at certain interfaces of laminates while the antisymmetric mode is more suited for identification of delamination in composite structures.

Suggested Citation

  • Fucai Li & Haikuo Peng & Xuewei Sun & Jinfu Wang & Guang Meng, 2012. "Wave Propagation Analysis in Composite Laminates Containing a Delamination Using a Three-Dimensional Spectral Element Method," Mathematical Problems in Engineering, Hindawi, vol. 2012, pages 1-19, May.
    • Handle: RePEc:hin:jnlmpe:659849
    DOI: 10.1155/2012/659849
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