Optimal Design of Leading Edge of Compliant Wing Based on Load Path of Similar Tree Structure
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摘要: 根据柔性机翼前缘的变形要求,以离散体结构拓扑优化为出发点,以实际位移与目标位移之间的偏差为目标,建立目标优化函数。采用类树形结构的载荷路径建立初始构形,利用遗传算法(GA)进行结构拓扑优化,并结合拓扑结构优化结果进行二次优化,获得更优解。通过ANSYS仿真分析,结果表明该方法是可行的。Abstract: To meet the requirements for the changes in the shape of the leading edge of a compliant wing, we set up the objective optimization function,starting from the topological optimization of a discrete structure and aiming at minimizing the deformation between deformed shape and target shape. We employ the load path of a similar tree structure to build the initial configuration of the leading edge and the genetic algorithm to optimize its topology. Taking the topological optimization results into consideration,we perform the quadratic optimization to find the opti-mal solution. The ANSYS simulation results show that our method is feasible.
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Key words:
- computer simulation /
- computer software /
- design /
- genetic algorithms /
- optimization
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[1] Kota S. Shape control of adaptive structures using compiant mech-anisms[J]. Standard Form, 2000, 298:1 ~7 [2] Kota S,et al. Design and application of compliant mechanisms for morphing aircraft structures[A]. Smart Structures and Materi-als 2003: Industrial and Commerical Applications of Smart Structures Technologies[C],Proceedings of SPIE, 2003 [3] Liu S L, Ge W J, Li S J. Optimal synthesis of compliant trailing edge for morphing[J]. Chinese Journal of Aeronautics, 2008, 21(2) [4] Lu K J, Kota S. Parameterization strategy for optimition of shape mor-phing compliant mechanisms using load path representation[A]. ASME 2003 Design Engineering Technical Confe rences and Com-puter and Information in Engineering Conference[C],ASME, Chicago, IL, DETC2003/DAC-48775, 2003 [5] Lu K J,Kota S. Design of compliant mechanisms for morphing structure shapes[J]. Journal of Intelligent Material Systems and Structures, 2003, 14(6):379 ~391 -
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