Volume 29 Issue 4
Apr.  2014
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Article Navigation >  Journal of Aerospace Power  > 2014  >  29(4): 887-893
MEN Xiu-hua, LI Shun-ming, SONG Fang-zhen, XU Jia. Signal transmission model with gradient temperature based on finite difference time domain[J]. Journal of Aerospace Power, 2014, 29(4): 887-893. doi: 10.13224/j.cnki.jasp.2014.04.020
Citation: MEN Xiu-hua, LI Shun-ming, SONG Fang-zhen, XU Jia. Signal transmission model with gradient temperature based on finite difference time domain[J]. Journal of Aerospace Power, 2014, 29(4): 887-893. doi: 10.13224/j.cnki.jasp.2014.04.020
shu

Signal transmission model with gradient temperature based on finite difference time domain

doi: 10.13224/j.cnki.jasp.2014.04.020

  • 1. School of Mechanical Engineering,University of Jinan,Jinan 25002;

  • 2. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;

  • 3. Xian Aircraft Industry(Group) Company Limited, Aviation Industry Corporation of China,Xian 710089,China

  • Received Date: 2013-01-23
  • Publish Date: 2014-04-28
    Abstract
  • A signal transmission model with gradient temperature was established on the basis of finite difference time domain(FDTD) method. And then, an iterative solution was applied to realize the signal transmission with different temperatures at different times. It shows that the time domain average voltage amplitude of output signal gradually attenuates with temperature rise, and at 573K the voltage amplitude is only about 90% of that of 303K, with the attenuation rate nearly 10%. The corresponding vibration test with gradient temperature was conducted. The power spectrum peak and time domain average voltage amplitude of output signal gradually reduce with temperature rise, which is consistent with the results of proposed model. The results of study will help to improve the accuracy of vibration test.

     

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