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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 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.79 No.3
- 발행연도
- 2021.1
- 수록면
- 279 - 288 (10page)
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초록· 키워드
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In this paper, a simple n-order refined theory is developed for free vibration of a simply supported sandwich beam with functionally graded porous layers. The present theory is variationally consistent, uses the n-order polynomial term to represent the displacement field, and does not require a shear correction factor. The variation of shear stress is parabolic across the thickness and the condition at the top and bottom surface are shear stress-free. Equations of motion are derived from Hamilton’s principle. In the solution of the governing equations, the Navier procedure is implemented. For porosity effect, four different porosity distributions namely O, X, V, and homogeneous distribution types are modelled; power-law variation of functionally graded face sheets is considered. Results show the effects of varying gradients, thickness to length ratios, effects of the porosity parameters and porosity types on free vibration of functionally graded sandwich beams for simply supported boundary conditions. The results of the present method were validated with existing literature for both hard (ceramic) core material and soft (metal) core material, and good agreement with the benchmarks is seen. The effect of hard-core and soft-core material on natural frequency is found to be contrasting in nature.
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참고문헌 (12)
참고문헌 신청
Mehmet Avcar / 2019 / Free vibration of imperfect sigmoid and power law functionally graded beams / Steel and Composite Structures, An International Journal 30(6):603~615
Belaid Batou / 2019 / Wave dispersion properties in imperfect sigmoid plates using various HSDTs / Steel and Composite Structures, An International Journal 33(5):699~716
Riadh Bennai / 2015 / A new higher-order shear and normal deformation theory for functionally graded sandwich beams / Steel and Composite Structures, An International Journal 19(3):521~546
Ebrahimi, F. / 2019 / Vibration analysis of magneto-flexo-electrically actuated porous rotary nanobeams considering thermal effects via nonlocal strain gradient elasticity theory / Adv. Nano Res 7(4):223~231
Emad E. Ghandourh / 2020 / Dynamic analysis of functionally graded nonlocal nanobeam with different porosity models / Steel and Composite Structures, An International Journal 36(3):293~305
Belaid Batou / 2019 / Wave dispersion properties in imperfect sigmoid plates using various HSDTs / Steel and Composite Structures, An International Journal 33(5):699~716
Riadh Bennai / 2015 / A new higher-order shear and normal deformation theory for functionally graded sandwich beams / Steel and Composite Structures, An International Journal 19(3):521~546
Ebrahimi, F. / 2019 / Vibration analysis of magneto-flexo-electrically actuated porous rotary nanobeams considering thermal effects via nonlocal strain gradient elasticity theory / Adv. Nano Res 7(4):223~231
Emad E. Ghandourh / 2020 / Dynamic analysis of functionally graded nonlocal nanobeam with different porosity models / Steel and Composite Structures, An International Journal 36(3):293~305
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