Smart Structures and Systems

  • 제13권4호
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  • Pages.501-515
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  • 2014
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Effective electromechanical coupling coefficient of adaptive structures with integrated multi-functional piezoelectric structural fiber composites

  • 투고 : 2013.03.28
  • 심사 : 2013.12.13
  • 발행 : 2014.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a linear computational homogenization framework to evaluate the effective (or generalized) electromechanical coupling coefficient (EMCC) of adaptive structures with piezoelectric structural fiber (PSF) composite elements. The PSF consists of a silicon carbide (SiC) or carbon core fiber as reinforcement to a fragile piezo-ceramic shell. For the micro-scale analysis, a micromechanics model based on the variational asymptotic method for unit cell homogenization (VAMUCH) is used to evaluate the overall electromechanical properties of the PSF composites. At the macro-scale, a finite element (FE) analysis with the commercial FE code ABAQUS is performed to evaluate the effective EMCC for structures with the PSF composite patches. The EMCC is postprocessed from free-vibrations analysis under short-circuit (SC) and open-circuit (OC) electrodes of the patches. This linear two-scale computational framework may be useful for the optimal design of active structure multi-functional composites which can be used for multi-functional applications such as structural health monitoring, power harvest, vibration sensing and control, damping, and shape control through anisotropic actuation.

키워드

참고문헌

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  1. SH-wave in a piezomagnetic layer overlying an initially stressed orthotropic half-space vol.17, pp.2, 2016, https://doi.org/10.12989/sss.2016.17.2.327
  2. A micromechanics approach for effective elastic properties of nano-composites with energetic surfaces/interfaces vol.159, 2017, https://doi.org/10.1016/j.compstruct.2016.09.066
  3. A study on performance of distributed piezoelectric composite actuators using Galerkin method vol.28, pp.10, 2014, https://doi.org/10.1088/1361-665x/ab3f3d
  4. Investigation on Actuation Performance of Continuous Fiber Reinforced Piezoelectric Composite Actuator vol.36, pp.3, 2014, https://doi.org/10.1017/jmech.2019.42