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变形翼伞回收系统的建模与分析 被引量:5
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作者 郭一鸣 闫建国 +3 位作者 邢小军 吴慈航 陈潇然 李丰浩 《西北工业大学学报》 EI CAS CSCD 北大核心 2020年第5期952-958,共7页
翼伞的气动力计算是研究翼伞回收系统建模的关键技术问题。为了进一步提高建模精度,同时考虑了翼伞充气变形和后缘下偏量的影响,通过流固耦合方法获得各个状态下的升力系数、阻力系数。然后使用最小二乘法辨识获得气动系数和下偏量及变... 翼伞的气动力计算是研究翼伞回收系统建模的关键技术问题。为了进一步提高建模精度,同时考虑了翼伞充气变形和后缘下偏量的影响,通过流固耦合方法获得各个状态下的升力系数、阻力系数。然后使用最小二乘法辨识获得气动系数和下偏量及变形之间的量化关系,改进翼伞回收系统的六自由度模型。研究表明,考虑变形及下偏情况的翼伞不仅结构和实际翼伞类似,且获得的气动参数与风洞试验更加接近,证明新方法对于翼伞回收系统精确建模的研究有一定的意义。 展开更多
关键词 翼伞 流固耦合 后缘下偏 充气变形 动力学模型
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Theoretical analysis and experimental study of an air inflated membrane structure 被引量:10
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作者 Jing-hai GONG Xiu-ying YANG +1 位作者 Zi-zhao ZHANG Jin-cheng ZHAO 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2010年第1期25-33,共9页
In this paper,an experimental study of an air inflated membrane was carried out based on the China National Stadium (the Bird's Nest). After the 2008 Olympic Games,it was apparent that the future use of the Bird&#... In this paper,an experimental study of an air inflated membrane was carried out based on the China National Stadium (the Bird's Nest). After the 2008 Olympic Games,it was apparent that the future use of the Bird's Nest would be enhanced if rainfall could be prevented from entering the stadium. The installation of an air inflated membrane across the opening of the steel structure was proposed as a solution to this problem. To verify the scheme,a theoretical analysis and experimental study of an air inflated membrane was carried out. Experimental and computational models were developed,form-finding was carried out using both experimental and theoretical methods,and the results from the two approaches,including the deflection of the air inflated membrane and deformation of the support structure,were analyzed and compared. The force-transfer path and deformation of the air inflated membrane under loads was studied. Conclusions and suggestions are presented. 展开更多
关键词 China National Stadium Air inflated membrane FORM-FINDING
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