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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.68 No.5
- 발행연도
- 2018.1
- 수록면
- 603 - 619 (17page)
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초록· 키워드
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In this research, an effective computational technique is carried out for nonlinear and post-buckling analyses of cracked imperfect composite plates. The laminated plates are assumed to be moderately thick so that the analysis can be carried out based on the first-order shear deformation theory. Geometric non-linearity is introduced in the way of von-Karman assumptions for the strain-displacement equations. The Ritz technique is applied using Legendre polynomials for the primary variable approximations. The crack is modeled by partitioning the entire domain of the plates into several sub-plates and therefore the plate decomposition technique is implemented in this research. The penalty technique is used for imposing the interface continuity between the sub-plates. Different out-of-plane essential boundary conditions such as clamp, simply support or free conditions will be assumed in this research by defining the relevant displacement functions. For in-plane boundary conditions, lateral expansions of the unloaded edges are completely free while the loaded edges are assumed to move straight but restricted to move laterally. With the formulation presented here, the plates can be subjected to biaxial compressive loads, therefore a sensitivity analysis is performed with respect to the applied load direction, along the parallel or perpendicular to the crack axis. The integrals of potential energy are numerically computed using Gauss-Lobatto quadrature formulas to get adequate accuracy. Then, the obtained non-linear system of equations is solved by the Newton-Raphson method. Finally, the results are presented to show the influence of crack length, various locations of crack, load direction, boundary conditions and different values of initial imperfection on nonlinear and post-buckling behavior of laminates.
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참고문헌 (47)
참고문헌 신청
Alinia, M. M. / 2007 / Influence of central cracks on buckling and post-buckling behaviour of shear panels / Thin-Wall. Struct 45:422~431
Batra, R. C. / 2002 / Analysis of Elastodynamic deformations near a crack/notch tip by meshless local Petrov-Galarkin(MLPG)method / Comput. Model. Eng. Sci 3(6):717~730
Zongjie Cao / 2012 / A new numerical modelling for evaluating the stress intensity factors in 3-D fracture analysis / Structural Engineering and Mechanics, An Int＇l Journal 43(3):321~336
M. Cetkovic / 2011 / Large deflection analysis of laminated composite plates using layerwise displacement model / Structural Engineering and Mechanics, An Int＇l Journal 40(2):257~277
Chia, C. Y. / 1988 / Geometrically nonlinear behavior of composite plates : A review / Appl. Mech. Rev 41(12):439~451
Batra, R. C. / 2002 / Analysis of Elastodynamic deformations near a crack/notch tip by meshless local Petrov-Galarkin(MLPG)method / Comput. Model. Eng. Sci 3(6):717~730
Zongjie Cao / 2012 / A new numerical modelling for evaluating the stress intensity factors in 3-D fracture analysis / Structural Engineering and Mechanics, An Int＇l Journal 43(3):321~336
M. Cetkovic / 2011 / Large deflection analysis of laminated composite plates using layerwise displacement model / Structural Engineering and Mechanics, An Int＇l Journal 40(2):257~277
Chia, C. Y. / 1988 / Geometrically nonlinear behavior of composite plates : A review / Appl. Mech. Rev 41(12):439~451
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