Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Optimization of 1-3 Type Piezocomposite Structures Considering Inter-Pillar Vibration Modes

Inter-Pillar 진동 모드를 고려한 1-3형 압전복합체의 구조 최적화

  • Pyo, Seonghun (Department of Mechanical Engineering, Kyungpook National University) ;
  • Kim, Jinwook (Department of Mechanical Engineering, Kyungpook National University) ;
  • Roh, Yongrae (Department of Mechanical Engineering, Kyungpook National University)
  • Received : 2013.05.21
  • Accepted : 2013.05.24
  • Published : 2013.06.01
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Abstract

With polymer properties and ceramic volume fraction as design variables, the optimal structure of 1-3 piezocomposites has been determined to maximize the thickness mode electromechanical coupling factor. When the piezocomposite vibrates in a thickness mode, inter-pillar resonant modes are likely to occur between lattice-structured piezoceramic pillars and polymer matrix, which significantly deteriorates the performance of the piezocomposite. In this work, a new method to design the structure of the 1-3 type piezocomposite is proposed to maximize the thickness mode electromechanical coupling factor while preventing the occurrence of the inter-pillar modes. Genetic algorithm was used for the optimal design, and the finite element analysis method was used for the analysis of the inter-pillar mode.

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References

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