Force transmission characteristics of force-measuring system in impulse combustion wind tunnel

被引：0
|
作者：
Li S. [1 ]
Gao H. [1 ]
Liu B. [1 ]
Fu G. [1 ]
Lu C. [1 ]
机构：
[1] School of Mechanical Engineering, Southwest Jiaotong University, Chengdu
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2018年 / 37卷 / 21期
关键词：
Force transmission characteristics; Force-measuring system; Fourier transform; Frequency response function; Impulse combustion wind tunnel;
D O I：
10.13465/j.cnki.jvs.2018.21.017
中图分类号：
学科分类号：
摘要：
Studying force transmission characteristics of force-measuring system in impulse combustion wind tunnel can help to improve the accuracy of evaluating wind tunnel force measurement data. At present, this kind study is rare. A method for wind tunnel force-measuring system's force transmission characteristics analysis based on the finite element simulation was proposed. Firstly, the dynamic model of the force-measuring system was established based on the parametric recognition method. The correctness of this built finite element model was verified using the system's modal tests. Secondly, based on the theory of aircraft dynamics, force transmission characteristics between gravity center of an aircraft model and floating frame of a balance were selected to describe the force transmission characteristics of the force-measuring system. Then, a harmonic response analysis for the finite element model of the force-measuring system was performed to obtain force transmission characteristics between gravity center of an aircraft model and floating frame of a balance. Thirdly, the aerodynamic force acting on the aircraft model was equivalent to a concentrated force acting on the gravity center of the aircraft model, and the concentrated force was converted into a series of harmonic force components with Fourier transform. Based on the force transmission characteristics between the gravity center of the aircraft model and the floating frame of the balance, a series of harmonic force components were transferred from the gravity center of the aircraft model to the floating frame of the balance and then their new values were obtained. Finally, according to the balance test resolution, the harmonic force component unrecognized by the balance was screened. The ratio of this harmonic force component's energy to the total signal energy was calculated to evaluate the force transmission characteristics of the force-measuring system. © 2018, Editorial Office of Journal of Vibration and Shock. All right reserved.
引用
收藏
页码：117 / 125and142
相关论文
共 17 条
  • [1] Huang Y., Dong L., Zhao K., Et al., On the correlation of force test results of a tactical missile calibration model in five different wind tunnels, Experiments and Measurements in Fluid Mechanics, 16, 2, pp. 16-20, (2002)
  • [2] Satheesh K., Jagadeesh G., Analysis of an internally mountable accelerometer balance system for use with non-isotropic models in shock tunnels, Measurement, 42, 6, pp. 856-862, (2009)
  • [3] Johnson T.H., Parker P.A., Landman D., Calibration modeling of nonmonolithic wind-tunnel force balances, Journal of Aircraft, 47, 6, pp. 1860-1866, (2010)
  • [4] Wang Z., Sun P., Li X., Et al., Force test on internal and external flow simultaneous measurement of air-breathing hypersonic vehicle, Acta Aeronautica ET Astronautica Sinica, 36, 3, pp. 797-803, (2015)
  • [5] Duan W., Ang H., Xiao T., Design and wind tunnel test of an active morphing wing ornithoper, Acta Aeronautica et Astronautica Sinica, 34, 3, pp. 474-486, (2013)
  • [6] Le J., Liu W., He W., Et al., Impulse combustion wind tunnel and its application in rocket and scramjet research, Journal of Experiments in Fluid Mechanics, 19, 1, pp. 1-10, (2005)
  • [7] Liu W., Tan Y., Mao X., Et al., The development and preliminary application of a pulse combustion wind tunnel with new running way, Journal of Experiments in Fluid Mechanics, 21, 4, pp. 59-64, (2007)
  • [8] Wang F., He W., Mao P., Et al., Dynamic modeling of testing system in impulse facilities and load identification method, Journal of Vibration and Shock, 34, 1, pp. 94-103, (2015)
  • [9] Wen J., Liu W., Gao H., Et al., Vibration and force transmission characteristics analysis of hypersonic vehicle model, Journal of Vibration, Measurement & Diagnosis, 35, 5, pp. 961-967, (2015)
  • [10] Sanderson S., Simmons J., A drag measurement technique for free piston shock tunnels, 29th Aerospace Sciences Meeting, (1991)
12