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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.30 No.6
- 발행연도
- 2019.1
- 수록면
- 603 - 615 (13page)
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초록· 키워드
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In the present work, free vibration of beams made of imperfect functionally graded materials (FGMs) including porosities is investigated. Because of faults during process of manufacture, micro voids or porosities may arise in the FGMs, and this situation causes imperfection in the structure. Therefore, material properties of the beams are assumed to vary continuously through the thickness direction according to the volume fraction of constituents described with the modified rule of mixture including porosity volume fraction which covers two types of porosity distribution over the cross section, i.e., even and uneven distributions. The governing equations of power law FGM (P-FGM) and sigmoid law FGM (S-FGM) beams are derived within the frame works of classical beam theory (CBT) and first order shear deformation beam theory (FSDBT). The resulting equations are solved using separation of variables technique and assuming FG beams are simply supported at both ends. To validate the results numerous comparisons are carried out with available results of open literature. The effects of types of volume fraction function, beam theory and porosity volume fraction, as well as the variations of volume fraction index, span to depth ratio and porosity volume fraction, on the first three non-dimensional frequencies are examined in detail.
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참고문헌 (75)
참고문헌 신청
Abualnour, M. / 2018 / A novel quasi-3D trigonometric plate theory for free vibration analysis of advanced composite plates / Compos. Struct 184:688~697
Hadj Henni Abdelaziz / 2017 / An efficient hyperbolic shear deformation theory for bending, buckling and free vibration of FGM sandwich plates with various boundary conditions / Steel and Composite Structures, An International Journal 25(6):693~704
Akbas, S. D. / 2017 / Thermal effects on the vibration of functionally graded deep beams with porosity / Int. J. Appl. Mech 09:1750076
Akbas, S. D. / 2018 / Forced vibration analysis of functionally graded porous deep beams / Compos. Struct 186:293~302
Al-Basyouni, K. S. / 2015 / Size dependent bending and vibration analysis of functionally graded micro beams based on modified couple stress theory and neutral surface position / Compos. Struct 125:621~630
Hadj Henni Abdelaziz / 2017 / An efficient hyperbolic shear deformation theory for bending, buckling and free vibration of FGM sandwich plates with various boundary conditions / Steel and Composite Structures, An International Journal 25(6):693~704
Akbas, S. D. / 2017 / Thermal effects on the vibration of functionally graded deep beams with porosity / Int. J. Appl. Mech 09:1750076
Akbas, S. D. / 2018 / Forced vibration analysis of functionally graded porous deep beams / Compos. Struct 186:293~302
Al-Basyouni, K. S. / 2015 / Size dependent bending and vibration analysis of functionally graded micro beams based on modified couple stress theory and neutral surface position / Compos. Struct 125:621~630
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