Multi-objective design optimization of variable stiffness composite cylinders |
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| Affiliation: | 1. Polytechnique Montreal, Department of Mechanical Engineering, 2900 Boulevard Edouard-Montpetit, Montreal, Quebec H3C 3A7, Canada;2. Aerospace Manufacturing Technology Center, Institute for Aerospace Research, National Research Council Canada, 5145 Decelles Avenue, Montreal, Quebec H3T 2B2, Canada;1. Advanced Composite Centre for Innovation and Science, University of Bristol, Queen’s Building, BS8 1TR, United Kingdom;2. Structural Mechanics and Concepts Branch, NASA Langley Research Center, Hampton, VA, United States;1. Research Scholar, School of Aeronautical Sciences, Hindustan University, Keelambakkam, Chennai 603 103, India;2. Tech Mahindra Ltd., Electronic City, Bangalore 560 100, India;3. Integrated Modelling and Simulation Lab, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India;4. School of Mechanical Engineering, Vellore Institute of Technology, Deemed University, Vellore 632014, India |
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| Abstract: | The bending-induced buckling improvement in a variable stiffness (VS) composite cylinder (made by fiber steering) is studied. For such a cylinder, the effect of the variation of the direction of the load on its buckling performance of the cylinder is also examined. Compromise programming, as a multi-objective optimization method, is used to design for buckling of the VS cylinder subjected to bending load in either of the two opposite directions. Different combinations of weight factors for the structural performance in the two opposite directions were also applied to obtain the Pareto frontier as the main decision making tool for the designers in a multi-objective design problem. |
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| Keywords: | B. Buckling C. Computational modelling C. Finite element analysis (FEA) Variable stiffness |
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