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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.73 No.2
- 발행연도
- 2020.1
- 수록면
- 191 - 207 (17page)
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This study aims at investigating the size-dependent free vibration of porous nanoplates when exposed to hygrothermal environment and rested on Kerr foundation. Based on the modified power-law model, material properties of porous functionally graded (FG) nanoplates are supposed to change continuously along the thickness direction. The generalized nonlocal strain gradient elasticity theory incorporating three scale factors (i.e. lower- and higher-order nonlocal parameters, strain gradient length scale parameter), is employed to expand the assumption of second shear deformation theory (SSDT) for considering the small size effect on plates. The governing equations are obtained based on Hamilton’s principle and then the equations are solved using an analytical method. The elastic Kerr foundation, as a highly effected foundation type, is adopted to capture the foundation effects. Three different patterns of porosity (namely, even, uneven and logarithmic-uneven porosities) are also considered to fill some gaps of porosity impact. A comparative study is given by using various structural models to show the effect of material composition, porosity distribution, temperature and moisture differences, size dependency and elastic Kerr foundation on the size-dependent free vibration of porous nanoplates. Results show a significant change in higher-order frequencies due to small scale parameters, which could be due to the size effect mechanisms. Furthermore, Porosities inside of the material properties often present a stiffness softening effect on the vibration frequency of FG nanoplates.
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참고문헌 (67)
참고문헌 신청
Aghababaei, R. / 2009 / Nonlocal third-order shear deformation plate theory with application to bending and vibration of plates / J. Sound Vib 326(1):277~289
Andrews, E. / 2001 / Size effects in ductile cellular solids. Part II: experimental results / J. Mech. Sci. 43(3):701~713
Askes, H. / 2011 / Gradient elasticity in statics and dynamics : an overview of formulations, length scale identification procedures, finite element implementations and new results / J. Solids Struct 48(13):1962~1990
Atmane, H. A. / 2017 / Effect of thickness stretching and porosity on mechanical response of a functionally graded beams resting on elastic foundations / J. Mech. Mater. Design 13(1):71~84
Barati, M. R. / 2017 / On wave propagation in nanoporous materials / J. Eng. Sci 116:1~11
Andrews, E. / 2001 / Size effects in ductile cellular solids. Part II: experimental results / J. Mech. Sci. 43(3):701~713
Askes, H. / 2011 / Gradient elasticity in statics and dynamics : an overview of formulations, length scale identification procedures, finite element implementations and new results / J. Solids Struct 48(13):1962~1990
Atmane, H. A. / 2017 / Effect of thickness stretching and porosity on mechanical response of a functionally graded beams resting on elastic foundations / J. Mech. Mater. Design 13(1):71~84
Barati, M. R. / 2017 / On wave propagation in nanoporous materials / J. Eng. Sci 116:1~11
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