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Linear Static and Free Vibration Analysis of Laminated Composite Plates and Shells using a 9-node Shell Element with Strain Interpolation  

최삼열 ((주)이오엔지니어즈 구조부)
한성천 (대원과학대학 토목과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.17, no.3, 2004 , pp. 279-293 More about this Journal
Abstract
The analysis of linear static and free vibration problems of isotropic and laminated composite plates and shells is performed by the improved 9-node shell element with the new strain displacement relationship. In that relationship, the effect of new additional terms between the bending strain and displacement has been investigated in the warping problem. Natural co ordinate based strains, stresses and constitutive equations are used. The assumed natural strain method is used to alleviate both membrane and shear locking behavior from the element. The Lanczos method is employed in the calculation of the eigenvalues of laminated composite structures and the Gauss integration rule is adopted to evaluate the mass matrix. The numerical examples are compared with the analytical solutions to validate the current formulation and the results presented could be useful for the understanding of the behaviour of laminates under free vibration conditions.
Keywords
9free vibration-node shell element; laminated composite plates and shells; assumed natural strain method; eigenvalue;
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Times Cited By KSCI : 1  (Citation Analysis)
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