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符合尾随边缘形态变化的优化设计
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符合尾随边缘形态变化的优化设计(中文3000字+外文2300字)
摘要:自适应机翼一直使用柔和的技术指导变形的后缘,以改善他们的气动性能,本文介绍了一种在分布压力下,符合形状变化的结构设计的系统化方法。为了使需要的形状与目标形状偏差尽量最小,这种方法使用MATLAB和ANSYS的方式来优化标准分布机制。这种方式通过局部优化和遗传算法来获得。在优化过程中,许多因素应该考虑在内,例如:空气载荷、输出位移量和几何非线性。直接搜索法适用于局部优化和GA优化后的输入位移量。由此产生的结构可以做出他们在0到90。.之间变化,模型试验已经确认了这种方法的可行性。
关键词:自适应机翼,伺服顺从机构,遗传算法,拓扑最优化,分布压力载荷,几何非线性

Optimal Design of Compliant Trailing Edge for    
Shape Changing
Abstract: Adaptive wings have long used smooth morphing technique of compliant leading an d trailing edge to improve their aerodynamic characteristics.This paper introduces a systematic approach to design compliant structures to carry out required shape changes under distributed pressure loads.In order to minimize the deviation of the deformed shape from the target shape,this method uses M ATLAB and ANSYS to optimize the distributed compliant mechanisms by way of the ground approach and genetic algorithm (GA)to remove the elements possessive of very low stresses.In the optimization process,man y factors should be considered such as air loads,input displacements,and geometric nonlinearities。Direct search method is used to locally optimize the dimension an d input displacement after the GA optimization。The resultant structure could make its shape change from 0 to 9.3degreesTheexperimental data of the model confirm s the feasibility of this approach.
Keywords: adaptive wing;compliant mechanism;genetic algorithm ;topology optimization;distributed pressure load;geometric nonlinearity
 

符合尾随边缘形态变化的优化设计

 

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