Wear simulation and its effect on contact pressure distribution and squeal of a disc brake
In the past, wear at the disc and pads interface of disc brakes has rarely been accounted for in a 3-dimensional finite element (FE) model for studying brake squeal. Thus, its effect on disc brake squeal is only possible to investigate through experimental methods. In the present paper, wear over...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IMechE
2006
|
| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/512/1/arahim_braking2006_isbn_085316_245x.pdf http://eprints.utm.my/id/eprint/512/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | In the past, wear at the disc and pads interface of disc brakes has rarely been accounted for in
a 3-dimensional finite element (FE) model for studying brake squeal. Thus, its effect on disc
brake squeal is only possible to investigate through experimental methods. In the present
paper, wear over time at the pads interface is simulated using a modified wear rate formula.
Confirmation of the proposed wear formula is made against experimental results.
The surface topographies of two brand new pairs of brake pads are measured. The contact
tests using pressure-indicating films are carried out in order to capture static pressure
distributions. The same brake pads are tested under several braking applications. For each
braking application, the static contact pressure distribution is measured. The results are used
to compare with the simulated results predicted by the FE model. To do so, the detailed 3-
dimensional finite element model of a real disc brake is developed and validated through
appropriate analyses.
The paper also investigates squeal generation in the above braking applications using
complex eigenvalue analysis that is available in a commercial software package. The
predicted results are then compared to the squeal events observed in the experiments. |
|---|