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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.38 No.3
- 발행연도
- 2021.1
- 수록면
- 337 - 353 (17page)
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초록· 키워드
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Micro-electro-mechanical systems (MEMS) are widely employed in sensors, biomedical devices, optic sectors, and micro-accelerometers. New reinforcement materials such as carbon nanotubes as well as graphene platelets provide stiffer structures with controllable mechanical specifications by changing the graphene platelet features. This paper deals with buckling analyses of functionally graded graphene platelets micro plates with two piezoelectric layers subjected to external applied voltage. Governing equations are based on Kirchhoff plate theory assumptions beside the modified couple stress theory to incorporate the micro scale influences. A uniform temperature change and external electric field are regarded along the micro plate thickness. Moreover, an external in-plane mechanical load is uniformly distributed along the micro plate edges. The Hamilton’s principle is employed to extract the governing equations. The material properties of each composite layer reinforced with graphene platelets of the considered micro plate are evaluated by the Halpin–Tsai micromechanical model. The governing equations are solved by the Navier’s approach for the case of simply-supported boundary condition. The effects of the external applied voltage, the material length scale parameter, the thickness of the piezoelectric layers, the side, the length and the weight fraction of the graphene platelets as well as the graphene platelets distribution pattern on the critical buckling temperature change and on the critical buckling in-plane load are investigated. The outcomes illustrate the reduction of the thermal buckling strength independent of the graphene platelets distribution pattern while meanwhile the mechanical buckling strength is promoted. Furthermore, a negative voltage, -50 Volt, strengthens the micro plate stability against the thermal buckling occurrence about 9% while a positive voltage, 50 Volt, decreases the critical buckling load about 9% independent of the graphene platelet distribution pattern.
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참고문헌 (27)
참고문헌 신청
Reza Aghazadeh / 2018 / Modelling of graded rectangular micro-plates with variable length scale parameters / Structural Engineering and Mechanics, An Int＇l Journal 65(5):573~585
Hadi Arvin / 2018 / The Flapwise Bending Free Vibration Analysis of Micro-rotating Timoshenko Beams Using the Differential Transform Method / Journal of Vibration and Control 24(20):4868~4884
Ismahene Belkorissat / 2015 / On vibration properties of functionally graded nano-plate using a new nonlocal refined four variable model / Steel and Composite Structures, An International Journal 18(4):1063~1081
Bachir Bouderba / 2013 / Thermomechanical bending response of FGM thick plates resting on Winkler-Pasternak elastic foundations / Steel and Composite Structures, An International Journal 14(1):85~104
Fouzia Larbi Chaht / 2015 / Bending and buckling analyses of functionally graded material (FGM) size-dependent nanoscale beams including the thickness stretching effect / Steel and Composite Structures, An International Journal 18(2):425~442
Hadi Arvin / 2018 / The Flapwise Bending Free Vibration Analysis of Micro-rotating Timoshenko Beams Using the Differential Transform Method / Journal of Vibration and Control 24(20):4868~4884
Ismahene Belkorissat / 2015 / On vibration properties of functionally graded nano-plate using a new nonlocal refined four variable model / Steel and Composite Structures, An International Journal 18(4):1063~1081
Bachir Bouderba / 2013 / Thermomechanical bending response of FGM thick plates resting on Winkler-Pasternak elastic foundations / Steel and Composite Structures, An International Journal 14(1):85~104
Fouzia Larbi Chaht / 2015 / Bending and buckling analyses of functionally graded material (FGM) size-dependent nanoscale beams including the thickness stretching effect / Steel and Composite Structures, An International Journal 18(2):425~442
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