有风攻角的棱柱体驰振计算方法研究

谢兰博1,廖海黎2

振动与冲击 ›› 2018, Vol. 37 ›› Issue (17) : 9-15.

PDF(1003 KB)
PDF(1003 KB)
振动与冲击 ›› 2018, Vol. 37 ›› Issue (17) : 9-15.
论文

有风攻角的棱柱体驰振计算方法研究

  • 谢兰博1,廖海黎2
作者信息 +

Galloping calculation method for prisms with wind attack angle

  • XIE Lanbo1,LIAO Haili2
Author information +
文章历史 +

摘要

基于准定常理论,推导了有风攻角的横风向驰振临界风速以及振幅计算公式。采用H形柱开展风洞试验,发现:关于驰振临界风速,在较小的风攻角下本文方法计算结果和Den-Hartog公式计算结果很接近,而在较大的风攻角之下两者相差较大,说明Den-Hartog公式无法应用于较大风攻角的驰振计算;关于驰振振幅,理论计算结果和试验非常吻合,证实了本文计算方法的正确性。

Abstract

The calculation formulas for lateral galloping critical wind speed and amplitude of prisms with wind attack angle were deduced with the quasi-steady theory. H-shaped columns were adopted to conduct wind tunnel tests and calculations. The results showed that the galloping critical wind speed calculation results using the proposed method are very close to those using Den-Hartog formula under smaller wind attack angles; under larger wind attack angles,the difference between the two results is bigger,so Den-Hartog formula can’t be used to do galloping calculation under larger wind attack angles; the results of theoretical calculation for galloping amplitude agree well with those of tests,the correctness of the proposed method is verified.



关键词

准定常理论 / 风攻角 / 驰振振幅 / 临界风速

引用本文

导出引用
谢兰博1,廖海黎2. 有风攻角的棱柱体驰振计算方法研究[J]. 振动与冲击, 2018, 37(17): 9-15
XIE Lanbo1,LIAO Haili2. Galloping calculation method for prisms with wind attack angle[J]. Journal of Vibration and Shock, 2018, 37(17): 9-15

参考文献

[1] Den-Hartog J P. Transmission Line Vibration Due to Sleet[J]. Transactions of the American Institute of Electrical Engineers, 1933, 51(4):1074-1076.
[2] Parkinson G V and Brooks N P H. On the Aeroelastic Instability of Bluff Cylinders[J]. Journal of Applied Mechanics, 1961, 28(2):252-258.
[3] Parkinson G V and Smith J D. The square prism as an aeroelastic non-linear oscillator[J]. Quarterly Journal of Mechanics & Applied Mathematics, 1964, 17(2):225-239.
[4] Novak M and Davenport A G. Aeroelastic Instability of Prisms in Turbulent Flow[J]. Journal of the Engineering Mechanics Division, 1970, 96:17-39.
[5] Novak M and Tanaka H. Effect of Turbulence on Galloping Instability[J]. Journal of the Engineering Mechanics Division, 1974, 100(1):27-47.
[6] Laneville A and Parkinson G V. Effects of turbulence on galloping of bluff cylinders[C]// Third International Conference on Wind Effects on Buildings and Structures. Tokyo, 1971:787-797.
[7] Laneville A. Effects of turbulence on wind induced vibrations of bluff cylinders.Ph.D.thesis,University of British Columbia,1973.
[8] Blevins R D. The Galloping Response of a Two-Degree-of-Freedom System[J]. Journal of Applied Mechanics, 1974, 41(4):1113-1118.
[9] Novak M. Galloping Oscillations of Prismatic Structures[J]. Journal of Engineering Mechanics, 1972. 98(1):27-46.
[10] Sullivan, P P. Aeroelastic galloping of tall structures in simulated winds.M.A.Sa.thesis,University of British Columbia 1977.
[11] Choi C K and Kwon D K. Aerodynamic Stability for Square Cylinder with Various Corner Cuts[J]. Wind & Structures An International Journal, 1999, 2(3):173-187.

PDF(1003 KB)

Accesses

Citation

Detail

段落导航
相关文章

/