Abstract
This study discusses identification of material constants of Single-Layer CFRP thin plate using vibration analysis with general purpose FEM code and differential evolution method. This identification method is a method to select material parameters to match the vibration characteristics of the experiment and the vibration characteristics of the analysis. In the method, a general-purpose FEM code calculates vibration modes and natural frequencies of thin CFRP plate using material parameters which are selected by differential evolution method (DE). To reduce number of generations, ILSDE (DE based on Improved Learning Strategy) is used instead of DE. The number of generations is lowest when the number of random select individual is three. Comparison of the reference data and the two FEM models show no significant difference in the identification results. The results show that the identification method has sufficient capability to reproduce well the experimental natural frequencies.
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