突风响应在时域及频域中的分析方法研究  

Research on gust analysis method in time domain and frequency domain

作　　者：刘滢滢 Liu Yingying(School of Astronautics,Harbin Institute of Technology,Heilongjiang Harbin,150001,China;Shanghai Aircraft Design and Research Institute,Commercial Aircraft Corporation of China Ltd.,Shanghai,201210,China)

机构地区：[1]哈尔滨工业大学航天学院,黑龙江哈尔滨150001 [2]中国商用飞机有限责任公司上海飞机设计研究院,上海201210

出　　处：《机械设计与制造工程》2023年第10期103-108,共6页Machine Design and Manufacturing Engineering

摘　　要：对比开环及闭环突风响应的时域及频域方法,构建单机翼模型,分别采用基于MSC.Nastran的频域分析;基于Zaero的频域分析;基于Zaero的时域分析;对气动力影响系数矩阵有理化处理,对突风激励进行傅里叶逆变换,在Simulink中实现状态空间内的时域响应分析;对传递函数编程分析等分析方法进行比对,给出了不同分析结果的差异及造成差异的原因。结果显示:不同计算方法的开环及闭环突风时域及频域分析响应结果基本一致,优化参数后,开环翼梢加速度频域响应值差异低于2.1%,闭环翼梢加速度时域响应值差异低于3.7%。The gust analysis model of single wing of civil aircraft is constructed,and gust analyses in time domain and frequency domain are performed.The open loop and close loop gust analyses are established with the frequency domain analysis in Msc.Nastran,the frequency domain and time domain analysis in Zaero.Besides,the state-space equations are established by applying the rational function approximation of unsteady aerodynamic matrix and the inverse Fourier transformation of gust velocity input matrix in Simulink.The gust analysis transfer function is programmed.The gust analysis results in different methods are basically consistent.The acceleration of wingtip response difference of open loop analysis using different method in frequency domain is less than 2.1%,which in time domain of close loop is less than 3.7%after optimizing the parameters.

关 键 词：气动弹性 时域突风分析 频域突风分析 

分 类 号：V211.47[航空宇航科学与技术—航空宇航推进理论与工程]