摘要
介绍了颤振导数识别的强迫振动方法试验装置及识别原理 ,用它进行了三种典型断面形式的颤振导数识别 ,研究了不同驱动频率、振幅对识别结果的影响。研究结果表明 :强迫振动法具有试验数据重复性好、测定折减风速范围宽。
In the paper,the test facility and principle of the identification for flutter derivatives applying the forced vibration method are introduced.The identification for flutter derivatives of three representative sectional models is carried out.the influence of varied actuating frequencies and amplitudes are discussed.The result shows that the forced vibration method has some certain advantages,for example,the good repeat of test dates,wider reduced velocity range,no system identification being needed to get the coupled flutter derivatives,and so on.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2001年第2期36-39,44,共5页
China Journal of Highway and Transport
基金
国家自然科学基金面上项目 (5 97780 43)
国家自然科学基金重大项目 (5 9895 410 )
