Moving mode shape function approach for spinning disk and asymmetric disc brake squeal

作者：Kang Jaeyoung^*

来源：Journal of Sound and Vibration, 2018, 424: 48-63.

DOI：10.1016/j.jsv.2018.03.016

• Spinning disk
• Brake squeal
• Moving mode shape function
• Asymmetric disc
• Floquet theory

The solution approach of an asymmetric spinning disk under stationary friction loads requires the mode shape function fixed in the disk in the assumed mode method when the equations of motion is described in the space-fixed frame. This model description will be termed the 'moving mode shape function approach' and it allows us to formulate the stationary contact load problem in both the axisymmetric and asymmetric disk cases.
Numerical results show that the eigenvalues of the time-periodic axisymmetric disk system are time-invariant. When the axisymmetry of the disk is broken, the positive real parts of the eigenvalues highly vary with the rotation of the disk in the slow speeds in such application as disc brake squeal. By using the Floquet stability analysis, it is also shown that breaking the axisymmetry of the disc alters the stability boundaries of the system.

• 出版日期2018-6-23