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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.6
- 발행연도
- 2021.9
- 수록면
- 711 - 722 (12page)
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초록· 키워드
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In this paper, the porosity distribution of functionally graded porous (FGP) beams are optimized using the genetic algorithm to achieve the maximum ratio of the normalized buckling load to the beam’s weight. The analytical forms for critical buckling loads of the FGP beams under different end conditions are determined analytically using principle virtual work based on the Euler and Timoshenko beam theories. The effects of Nano Graphene Platelets (NGPs) on the critical buckling load of the nanocomposite FGP beams are also taken into account. The sensitivity analyses show that porosity will reduce the buckling load-to-weight ratio of porous beams to conventional beams in some cases. Based on the optimization results, the optimum distribution of the porosity and NGPs’ volume fraction are proposed for several porosity coefficients. The obtained results indicate that the optimum distribution for porosity has a symmetric sandwich-like shape while the optimum distribution for NGPs’ volume fraction is uniform.
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참고문헌 (26)
참고문헌 신청
Ansari, R. / 2016 / Numerical study on the buckling and vibration of functionally graded carbon nanotube-reinforced composite conical shells under axial loading / Compos. Part B : Eng 95:196~208
Chen, D. / 2015 / Elastic buckling and static bending of shear deformable functionally graded porous beam / Compos. Struct 133:54~61
Chen, D. / 2016 / Free and forced vibrations of shear deformable functionally graded porous beams / Int. J. Mech. Sci 108-109:14~22
Fritsch, F. N. / 1980 / TMonotone piecewise cubic interpolation / SIAM J. Numer. Anal 17(2):238~246
Grygorowicz, M. / 2015 / Elastic buckling of a sandwich beam with variable mechanical properties of the core / Thin Wall. Struct 87:127~132
Chen, D. / 2015 / Elastic buckling and static bending of shear deformable functionally graded porous beam / Compos. Struct 133:54~61
Chen, D. / 2016 / Free and forced vibrations of shear deformable functionally graded porous beams / Int. J. Mech. Sci 108-109:14~22
Fritsch, F. N. / 1980 / TMonotone piecewise cubic interpolation / SIAM J. Numer. Anal 17(2):238~246
Grygorowicz, M. / 2015 / Elastic buckling of a sandwich beam with variable mechanical properties of the core / Thin Wall. Struct 87:127~132
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