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Effect of Aspect Ratio and Boundary Conditions on the Eigenfrequency Optimization of Composite Panels Using Lamination Parameters

2016

Conference Paper

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Eigenfrequency optimization of laminated composite panels is a common engineering problem. This process mostly involves designing stiffness properties of the structure. Optimal results can differ significantly depending on the values of the model parameters and the metrics used for the optimization. Building the know-how on this matter is crucial for choosing the appropriate design methodologies as well as validation and justification of prospective results. In this paper, effects of aspect ratio and boundary conditions on eigenfrequency optimization of composite panels by altering stiffness properties are investigated. Lamination parameters are chosen as design variables which are used in the modeling of stiffness tensors. This technique enables representation of overall stiffness characteristics and provides a convex design space. Fundamental frequency and difference between fundamental and second natural frequencies are maximized as design objectives. Optimization studies incorporating different models and responses are performed. Optimal lamination parameters and response values are provided for each case and the effects of model parameters on the solutions are quantified. The results indicate that trends of the optima change for different aspect ratio ranges and boundary conditions. Moreover, convergence occurs beyond certain critical values of the model parameters which may cause an optimization study to be redundant.

Author(s): Gokhan Serhat and Ipek Basdogan
Book Title: Proceedings of the ASMO UK International Conference on Numerical Optimisation Methods for Engineering Design
Pages: 160–168
Year: 2016
Month: July

Department(s): Haptic Intelligence
Bibtex Type: Conference Paper (inproceedings)
Paper Type: Conference

Address: Munich, Germany
State: Published

BibTex

@inproceedings{Serhat16-ASMO-Eigenfrequency,
  title = {Effect of Aspect Ratio and Boundary Conditions on the Eigenfrequency Optimization of Composite Panels Using Lamination Parameters},
  author = {Serhat, Gokhan and Basdogan, Ipek},
  booktitle = {Proceedings of the ASMO UK International Conference on Numerical Optimisation Methods for Engineering Design},
  pages = {160–168},
  address = {Munich, Germany},
  month = jul,
  year = {2016},
  month_numeric = {7}
}