pp. 769-776
S&M1236 Research Paper https://doi.org/10.18494/SAM.2016.1251 Published: July 27, 2016 Design of the Structure of 1-3 Piezocomposites by Considering the Interpillar Vibrational Modes [PDF] Seonghun Pyo and Yongrae Roh (Received September 14, 2015; Accepted January 18, 2016) Keywords: interpillar vibrational mode, optimization, 1-3 piezocomposites, finite element analysis, thickness-mode coupling coefficient
When a piezocomposite vibrates in a thickness mode, interpillar modes of vibration are likely to occur between lattice-structured piezoceramic pillars and a polymer matrix, which significantly diminishes the performance of the piezocomposite. The conventional method for designing 1-3 piezocomposite structures has not considered these interpillar modes. In this study, a new method of optimizing the structure of 1-3 piezocomposites has been developed to maximize the electromechanical coupling factor of thickness modes while preventing the occurrence of interpillar resonant modes. The volume fraction of piezoceramics and the aspect ratio of the piezocomposite were the design variables that were optimized. The genetic algorithm was used to optimize the structure, and the finite element method was used to analyze the interpillar modes.
Corresponding author: Yongrae RohCite this article Seonghun Pyo and Yongrae Roh, Design of the Structure of 1-3 Piezocomposites by Considering the Interpillar Vibrational Modes, Sens. Mater., Vol. 28, No. 7, 2016, p. 769-776. |