Identification of Diametrical Node Number of Travelling Wave Modes is Rotating Disk-Use of Directional Frequency Response Function

회전원판의 진행파 모드 절직경 수 규명-방향성 주파수응답함수의 이용

  • Kim, Myeong-Eop (Renault Samsung Motors) ;
  • Lee, Chong-Won (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 김명업 (삼성자동차(주) 기술연구소) ;
  • 이종원 (한국과학기술원 기계공학과)
  • Published : 1996.03.01


Directional frequency response functions(dFRFs) are introduced for isotropic rotating disks, treating pairs of excitations and measurements as the complex input and output, respectively. It is shown that the dFRFs can be effectively used for separation of the forward and backward travelling wave modes and identification of the diametrical node numbers associated with modes of interst. Numerical simuations and experimental works are performed to demonstrate the analytical development and its validity.