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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.22 No.6
- 발행연도
- 2016.1
- 수록면
- 1,239 - 1,259 (21page)
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초록· 키워드
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The modified couple stress-based third-order shear deformation theory is presented for sigmoid functionally graded materials (S-FGM) plates. The advantage of the modified couple stress theory is the involvement of only one material length scale parameter which causes to create symmetric couple stress tensor and to use it more easily. Analytical solution for dynamic instability analysis of S-FGM plates on elastic medium is investigated. The present models contain two-constituent material variation through the plate thickness. The equations of motion are derived from Hamilton's energy principle. The governing equations are then written in the form of Mathieu-Hill equations and then Bolotin's method is employed to determine the instability regions. The boundaries of the instability regions are represented in the dynamic load and excitation frequency plane. It is assumed that the elastic medium is modeled as Pasternak elastic medium. The effects of static and dynamic load, power law index, material length scale parameter, side-to-thickness ratio, and elastic medium parameter have been discussed. The width of the instability region for an S-FGM plate decreases with the decrease of material length scale parameter. The study is relevant to the dynamic simulation of micro structures embedded in elastic medium subjected to intense compression and tension.
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참고문헌 (60)
참고문헌 신청
Sihame Ait Yahia / 2015 / Wave propagation in functionally graded plates with porosities using various higher-order shear deformation plate theories / Structural Engineering and Mechanics, An Int＇l Journal 53(6):1143~1165
Akgöz, B. / 2015 / A microstructure-dependent sinusoidal plate model based on the strain gradient elasticity theory / Acta Mechanica 226(7):2277~2294
Akgöz, B. / 2015 / A novel microstructure-dependent shear deformable beam model / Int. J. Mech. Sci 99:10~20
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
Ansari, R. / 2011 / Free vibration analysis of size-dependent functionally graded microbeams based on a strain gradient Timoshenko beam theory / Compos. Struct 94(1):221~228
Akgöz, B. / 2015 / A microstructure-dependent sinusoidal plate model based on the strain gradient elasticity theory / Acta Mechanica 226(7):2277~2294
Akgöz, B. / 2015 / A novel microstructure-dependent shear deformable beam model / Int. J. Mech. Sci 99:10~20
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
Ansari, R. / 2011 / Free vibration analysis of size-dependent functionally graded microbeams based on a strain gradient Timoshenko beam theory / Compos. Struct 94(1):221~228
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