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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.39 No.5
- 발행연도
- 2021.1
- 수록면
- 543 - 564 (22page)
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초록· 키워드
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In this study free vibration analysis of a cracked Goland composite wing is investigated. The wing is modelled as a cantilevered beam based on Euler- Bernoulli equations. Also, composite material is modelled based on lamina fiber-reinforced. Edge crack is modelled by additional boundary conditions and local flexibility matrix in crack location, Castigliano’s theorem and energy release rate formulation. Governing differential equations are extracted by Hamilton’s principle. Using the separation of variables method, general solution in the normalized form for bending and torsion deflection is achieved then expressions for the cross-sectional rotation, the bending moment, the shear force and the torsional moment for the cantilevered beam are obtained. The cracked beam is modelled by separation of beam into two interconnected intact beams. Free vibration analysis of the beam is performed by applying boundary conditions at the fixed end, the free end, continuity conditions in the crack location of the beam and dynamic stiffness matrix determinant. Also, the effects of various parameters such as length and location of crack and fiber angle on natural frequencies and mode shapes are studied. Modal analysis results illustrate that natural frequencies and mode shapes are affected by depth and location of edge crack and coupling parameter.
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참고문헌 (35)
참고문헌 신청
Ahmed S. Ashour / 2003 / Buckling and vibration of symmetric laminated composite plates with edges elastically restrained / Steel and Composite Structures, An International Journal 3(6):439~450
J.R. Banerjee / 2001 / Explicit analytical expressions for frequency equation and mode shapes of composite beams / International Journal of Solids and Structures 38(14):2415~2426
J.R. Banerjee / 2006 / Dynamic stiffness formulation and free vibration analysis of a spinning composite beam / Computers & Structures 84(19-20):1208~1214
J. R. Banerjee / 1995 / Free vibration of composite beams - An exact method using symbolic computation / Journal of Aircraft 32(3):636~642
J.R. Banerjee / 2008 / A dynamic stiffness element for free vibration analysis of composite beams and its application to aircraft wings / Computers & Structures 86(6):573~579
J.R. Banerjee / 2001 / Explicit analytical expressions for frequency equation and mode shapes of composite beams / International Journal of Solids and Structures 38(14):2415~2426
J.R. Banerjee / 2006 / Dynamic stiffness formulation and free vibration analysis of a spinning composite beam / Computers & Structures 84(19-20):1208~1214
J. R. Banerjee / 1995 / Free vibration of composite beams - An exact method using symbolic computation / Journal of Aircraft 32(3):636~642
J.R. Banerjee / 2008 / A dynamic stiffness element for free vibration analysis of composite beams and its application to aircraft wings / Computers & Structures 86(6):573~579
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