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Abstract

Composite plates stiffened with close-section stiffeners have been analysed for large deflection using the method of finite elements.The laminated plate has been modelled using eight noded isoparametric quadratic plate bending elements which include transverse shear deformation. Three noded isoparametric beam elements have been used to formulate the stiffener elements.The stiffener can be incorporated at any arbitrary direction within the plate element. The nonlinear equations of the static equilibrium assuming small rotation have been solved by the Newton-Raphson iteration technique. The composite stiffened plates with both the open and the closed type stiffeners have been analysed in the present investigation and the results have been compared with the published results to validate the present formulation.

Keywords

composite hat shaped stiffener nonlinear stiffened plate torsional rigidity

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References

1. Funatogawa, O. , I. Kimpara and M. Takehana . "On the stiffening effect of hat shaped stiffeners on a plate," JSNA, Japan, vol. 144, Dec. 1978, vol. 145, June, 1979, vol. 146, Dec. 1979.

2. Tinawi, R. and R. G. Redwood . 1977. "Orthotropic bridge decks with closed stiffeners-analysis and behaviour," Comput. Struct. vol. 7, pp. 683-699.

3. Turvey, G. J. 1983. "Axisymmetric elastic large deflection behaviour of stiffened composite plates," Comput. Struct. vol. 2, pp. 72-88.

4. Liao, C. L. and J. N. Reddy . 1990. "Analysis of anisotropic stiffened composite laminates using a continuum shell element," Comput. Struct. vol. 34, no. 6, pp. 805-815.

5. Sheinman, I. , Y. Frostig and A. Segal . 1991. "Nonlinear analysis of stiffened laminated panels with various boundary conditions," J. Composite Materials, vol. 25, pp. 634-649.

6. Chattopadhyay, B. , P. K. Sinha and M. Mukhopadhyay . 1995. "Geometrically nonlinear analysis of composite stiffened plates using finite elements," Composite Structures, vol. 31, pp. 107-118.

7. Ray, C. and S. K. Satsangi . 1996. "Finite element analysis of laminated hat-stiffened plates," J. Reinforced Plastics and Composites, vol. 15, no. 12, pp. 1174-1193.

8. Koko, T. S. and M. D. Olson . 1991. "Nonlinear analysis of stiffened plates using super elements," Int. J. Num. Meth. Engg., vol. 31, pp. 319-343.

9. Sheikh, A. H. 1995. Linear and nonlinear analysis of stiffened plate structures under static and dynamic loading by the spline finite strip method. PhD Thesis submitted to Indian Institute of Technology, Kharagpur.

10.

10. Rao, D. V. 1992. Large deflection analysis of stiffened plates: A finite element approach M. Tech Thesis, Indian Institute of Technology, Kharagpur.

Geometric Nonlinear Static Analysis of Laminated Hat Stiffened Plates

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