Maximization of fundamental frequency of axially compressed laminated curved panels with cutouts |
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| Affiliation: | 1. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China;2. Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China;3. Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha 410075, China;4. National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, China;5. Jiangxi University of Science and Technology, Ganzhou, 341000, China |
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| Abstract: | Free vibration analyses of laminated curved panels with central circular cutouts and subjected to axial compressive forces are carried out by employing the Abaqus finite element program. The fundamental frequencies of these composite laminated curved panels with a given material system are then maximized with respect to fiber orientations by using the golden section method. Through parametric studies, the significant influences of the panel aspect ratio, the panel curvature, the cutout size and the compressive force on the maximum fundamental frequencies, the optimal fiber orientations and the associated fundamental vibration modes of these panels are demonstrated and discussed. |
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