Paper Title:
Using Modal Analysis and Optimization to Determine Elastic Constants of Thick Composite Plates
  Abstract

This paper presents an inverse method to derive the elastic constants of thick composite plates from the resonance frequencies of a free-edge test specimen based on modal vibration test. A mixed numerical experimental identification procedure is used for this purpose. The sum of the squared differences between the experimental frequencies and analytical frequencies from finite element method is chosen as the objective function. The optimization techniques, Hybrid Genetic /Simulated Annealing algorithm, have been applied to determine the elastic constants. As the objective function reaches its minimum, its corresponding design variables are the elastic constants of the material. The present method is applied to determine the elastic constants of AS4/PEKK material. The results indicate that different stacking sequences and numbers of frequencies have effects on the determination of elastic constants of the materials.

  Info
Periodical
Key Engineering Materials (Volumes 419-420)
Edited by
Daizhong Su, Qingbin Zhang and Shifan Zhu
Pages
473-476
DOI
10.4028/www.scientific.net/KEM.419-420.473
Citation
Y. H. Lin, C. L. Chang, "Using Modal Analysis and Optimization to Determine Elastic Constants of Thick Composite Plates", Key Engineering Materials, Vols. 419-420, pp. 473-476, 2010
Online since
October 2009
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Price
$32.00
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