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基于逐次升阶的翼型参数化与气动优化方法研究
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作者 王超 高正红 +3 位作者 黄江涛 赵轲 李静 许放 《空气动力学学报》 CSCD 北大核心 2015年第3期360-366,共7页
研究了基本Bezier样条曲线的特性,对比了不同阶次Bezier曲线对超临界翼型的几何描述能力以及由几何偏差带来的气动性能的偏差。利用Bezier曲线的特性提出逐次升阶的翼型参数化方法,结合改进的粒子群优化算法,建立了逐步扩展设计空间的... 研究了基本Bezier样条曲线的特性,对比了不同阶次Bezier曲线对超临界翼型的几何描述能力以及由几何偏差带来的气动性能的偏差。利用Bezier曲线的特性提出逐次升阶的翼型参数化方法,结合改进的粒子群优化算法,建立了逐步扩展设计空间的气动优化设计方法,兼顾设计空间和优化效率,很好地解决了设计质量和设计效率之间的矛盾。最后通过典型翼型的优化设计,对比了文中方法与传统Hicks-Henne型函数方法,验证了文中方法的可行性和高效性。 展开更多
关键词 参数化 BEZIER曲线 逐次升阶 粒子群算法 扩展设计空间
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Structural topology optimization: Extensibility and attainability 被引量:6
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作者 ZHANG WeiHong ZHANG ZhiDong +1 位作者 ZHU JiHong GAO Tong 《Science China(Technological Sciences)》 SCIE EI CAS 2014年第7期1310-1321,共12页
Extensibility and attainability of topology optimization are discussed by investigating a variety of simultaneous topology opti-mization methods extended from the standard formulation.First,the state of the art is hig... Extensibility and attainability of topology optimization are discussed by investigating a variety of simultaneous topology opti-mization methods extended from the standard formulation.First,the state of the art is highlighted through systematic classification of developed methods,such as simultaneous topology optimizations of microstructure and macrostructure,structure and supports,structure and design-dependent loads,structure and locations of involved components.Second,some recent results about simultaneous topology optimization of structure and applied loads are presented.It is shown that the simultaneous topology optimization is an integrated methodology that extends the concept of standard topology optimization in the sense of systematic design.The presence of more than one kind of design variable of different nature makes the optimization problem complex but enlarges the design space to attain the optimization. 展开更多
关键词 topology optimization simultaneous optimization MULTI-COMPONENT SUPPORT design-dependent load load location
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