First Order Analysis of Low Frequency Disk Brake Squeal

Reducing disk brake squeal, especially low frequency disk brake squeal (1-5kHz), is an important technical issue in vehicles. The disk brake squeal mechanism has been shown in many papers (1), (2), (3), (4), (5), (6), (7), (8) and (9). Recently, the disk brake squeal comes to be simulated by Finite Element Analysis (FEA) for disk brake design (10), (11), (12), (13), (14), (15), (16), (17), (18) and (19). Though FEA is useful, it is sometimes difficult to modify in large when the prototype of disk brake system has been designed. First Order Analysis gives design concepts, which should be done before FEA. This paper shows First Order Analysis of low frequency disk brake squeal. The equation of motion is shown in 4 degrees of freedom model. In this equation the generalized force matrix is composed of the variations of pressure and friction force between each brake pad and brake disk. The generalized force matrix is arranged with a symmetric matrix and an anti-symmetric matrix. Anti-symmetric matrix sometimes causes the dynamic instability, which represents disk brake squeal generation. This paper shows the stabilization of the system with making it symmetric, and gives the design concept for reducing low frequency disk brake squeal.

• Record URL:
  • https://doi.org/10.4271/2001-01-3136
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Denou, Yoshitomo
  • Nishiwaki, Masaaki
• Conference:
  • 19th Annual Brake Colloquium And Exhibition
  • Location: New Orleans Louisiana, United States
  • Date: 2001-10-28 to 2001-10-31
• Publication Date: 2001-10-28

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Brake discs; Brake pads; Brakes; Finite element method
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01799090
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2001-01-3136
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:20AM