| 基于CFD/CSD耦合的超声速舵面动载荷计算 |
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| 引用本文： | 蔡天星,徐敏,姚伟刚,窦怡彬. 基于CFD/CSD耦合的超声速舵面动载荷计算[J]. 工程力学, 2011, 0(3): 245-250 |
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| 作者姓名： | 蔡天星 徐敏 姚伟刚 窦怡彬 |
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| 作者单位： | 西北工业大学航天学院; |
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| 基金项目： | 国家自然基金重大研究计划项目(90816008); 博士点基金项目(20070699054) |
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| 摘 要： | 该文分析了超声速气动控制舵面在瞬态气动载荷作用下的位移及应力的时域变化.采用基于Volterra级数的气动弹性系统降阶模型快速获得了舵面的颤振边界.通过CFD/CSD耦合计算,确定了舵面在颤振速度下的瞬态气动载荷,并利用参数空间下的有限元四结点方法将每一时刻的气动载荷插值并施加到结构结点上,进行了瞬态响应分析,得到了舵...
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| 关 键 词： | 气动弹性力学 动载荷 CFD/CSD 降级模型 颤振 |
TRANSIENT LOAD ON SUPERSONIC FIN ANALYSIS BASED ON CFD/CSD COUPLING |
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| CAI Tian-xing,XU Min,YAO Wei-gang,DOU Yi-bin. TRANSIENT LOAD ON SUPERSONIC FIN ANALYSIS BASED ON CFD/CSD COUPLING[J]. Engineering Mechanics, 2011, 0(3): 245-250 |
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| Authors: | CAI Tian-xing XU Min YAO Wei-gang DOU Yi-bin |
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| Affiliation: | *CAI Tian-xing,XU Min,YAO Wei-gang,DOU Yi-bin(College of Astronautics,Northwestern Polytechnical University,Xi'an,Shaanxi 710072,China) |
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| Abstract: | The main goal of this paper is to analyze the displacement and stress of a supersonic fin on a transient dynamic load.The reduced order mode(ROM) based on Volterra Series is presented to calculate the flutter boundary,and CFD/CSD coupling is used to calculate the transient aerodynamic load.Transfer the load to a structural model by using FEFN(finite element four nodes) in a parametric space for a transient response analysis.The results show that due to the aerodynamic load and the inertia force through vibr... |
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| Keywords: | aeroelasticity dynamic load CFD/CSD ROM flutter |
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