Constrained torsional analysis of multi-cell composite tapered beams |
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| Authors: | MN Ahmed M Zahid |
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| Affiliation: | 1. Department of Aerospace Engineering, Graduate School of Engineering, Osaka, Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan;2. D.M. Engineering Department, Digital Media BU, Funai Electric Corporation, LTD, 7-7-1, Nakagaito, Daito, Osaka 574-0013, Japan;1. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China;2. Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300072, PR China;1. CNR-INSEAN, Via di Vallerano 139, 00128 Rome, Italy;2. Department of Mechanical and Aerospace Engineering, University of Rome “La Sapienza”, Via Eudossiana, 18, 00184 Rome, Italy;1. State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China;2. Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety, Wuhan Institute of Technology, Wuhan 430205, PR China;1. Università degli Studi di Udine, DIEGM, Via delle Scienze, 208-33100 Udine, Italy;2. ISVR, University of Southampton, Highfield SO17 1BJ, Southampton, UK;1. Mechanical Engineering Department, Amirkabir University of Technology, Tehran 15875-4413, Iran;2. Mechanical Engineering Department, Islamic Azad University, Central Tehran Branch, Tehran, Iran |
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| Abstract: | The structural performance of multi-cell composite tapered beams when subjected to constrained torsional loading is examined in this paper. A simplified analytical procedure for determining the constrained torsional response of a specific class of multi-cell composite tapered beams is outlined in some detail. The constrained condition analyzed is that of the cantilevered multi-cell beam with torque applied at the free end of the beam. In order to avoid the elastic couplings in the beams between bending, torsion and axial effects, laminates are symmetrically layed-up about their own mid-planes in such a manner that they possess in-plane orthotropy. The analysis approach essentially makes use of the existing theories of torsion appropriate to isotropic constructions, which are suitably modified to account for the non-isotropic nature of composite material. The details of the finite element analysis are also included in the paper. The comparisons between the theory and finite element results are shown to give close agreement. |
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