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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.32 No.6
- 발행연도
- 2019.1
- 수록면
- 753 - 767 (15page)
이용수
초록· 키워드
오류제보하기
Vibration control in mechanical equipments is an important problem where unwanted vibrations are vanish or at least diminished. In this paper, free vibration active control of the porous sandwich piezoelectric polymeric nanocomposite microbeam with microsensor and microactuater layers are investigated. The aim of this research is to reduce amplitude of vibration in micro beam based on linear quadratic regulator (LQR). Modified couple stress theory (MCST) according to sinusoidal shear deformation theory is presented. The porous sandwich microbeam is rested on elastic foundation. The core and face sheet are made of porous and three-phase carbon nanotubes/resin/fiber nanocomposite materials. The equations of motion are extracted by Hamilton’s principle and then Navier’s type solution are employed for solving them. The governing equations of motion are written in space state form and linear quadratic regulator (LQR) is used for active control approach. The various parameters are conducted to investigate on the frequency response function (FRF) of the sandwich microbeam for vibration active control. The results indicate that the higher length scale to the thickness, the face sheet thickness to total thickness and the considering microsensor and microactutor significantly affect LQR and uncontrolled FRF. Also, the porosity coefficient increasing, Skempton coefficient and Winkler spring constant shift the frequency response to higher frequencies. The obtained results can be useful for micro-electro-mechanical (MEMS) and nano-electro-mechanical (NEMS) systems.
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참고문헌 (91)
참고문헌 신청
Akavci, S. S. / 2016 / Mechanical behavior of functionally graded sandwich plates on elastic foundation / Compos. Part B : Eng 96:136~152
Alankaya, V. / 2017 / Analytical study on the mechanical performance of composite sandwich shells for dielectric radar domes / J. Sandw. Struct. Mater 19(1):108~130
Arani, A. G. / 2011 / Study of dynamic stability of the double-walled carbon nanotube under axial loading embedded in an elastic medium by the energy method / J. Appl. Mech. Tech. Phys 52(5):815~824
Ali Ghorbanpour Arani / 2016 / Vibration of axially moving 3-phase CNTFPC plate resting on orthotropic foundation / Structural Engineering and Mechanics, An Int＇l Journal 57(1):105~126
Mohammed Arefi / 2018 / Size-dependent vibration and electro-magneto-elastic bending responses of sandwich piezomagnetic curved nanobeams / Steel and Composite Structures, An International Journal 29(5):579~590
Alankaya, V. / 2017 / Analytical study on the mechanical performance of composite sandwich shells for dielectric radar domes / J. Sandw. Struct. Mater 19(1):108~130
Arani, A. G. / 2011 / Study of dynamic stability of the double-walled carbon nanotube under axial loading embedded in an elastic medium by the energy method / J. Appl. Mech. Tech. Phys 52(5):815~824
Ali Ghorbanpour Arani / 2016 / Vibration of axially moving 3-phase CNTFPC plate resting on orthotropic foundation / Structural Engineering and Mechanics, An Int＇l Journal 57(1):105~126
Mohammed Arefi / 2018 / Size-dependent vibration and electro-magneto-elastic bending responses of sandwich piezomagnetic curved nanobeams / Steel and Composite Structures, An International Journal 29(5):579~590
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