• Corpus ID: 18953010

Theoretical and Experimental Modal Analysis of Multiple Flexible Disk-Flexible Shaft System

@inproceedings{Khader2007TheoreticalAE,
  title={Theoretical and Experimental Modal Analysis of Multiple Flexible Disk-Flexible Shaft System},
  author={Naim Khader and Ali Atoum and Ahmad Al-Qaisia},
  year={2007}
}

• N. Khader, Ali Atoum, A. Al-Qaisia
• Published 2007
• Engineering

The presented paper describes the results of an experimental study, carried out to determine the natural frequencies of a flexible shaft with several flexible disks. A single input single output approach was adopted to build the Frequency Response Function, with an impact hammer and a piezoelectric accelerometer used to excite the system and to record its response, respectively. The experimental results are compared with the corresponding results, obtained from a theoretical study, based on the assumed mode method, with the free vibration mode shapes of the system’s individual components, i. e., flexible shaft and flexible disks, considered as the assumed functions. The acceptable agreement between the experimental and theoretical results provided confidence in the developed theoretical model. With the demonstrated confidence in the suggested theoretical model, it was further used to examine the effect of different rotor parameters, such as various shaft supporting conditions, disk-to-shaft bending rigidity ratio, span-wise position of the different disks along the shaft, as well as rotor speed, on the vibration characteristics of the examined rotor systems.