Abstract
The vibro-acoustic characteristics of an automotive brake drum is studied by applying a hybrid approach, which combines a numerical vibration analysis with an analytical acoustic solution. Specifically, structural vibration of a drum is investigated with the numerical finite element analysis, and vibratory displacements of the outer surface of the drum is approximated by simple mathematical expressions. Then, radiation of sound from the drum vibration is calculated using well-known theoretical solutions based on the simplified modal displacements. Finally, the calculation results are compared with those obtained by full numerical analyses. The results show that the numerical-analytical hybrid method allows relatively accurate calculation of vibro-acoustic properties of a brake drum under realistic boundary conditions.
| Original language | English |
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| Pages (from-to) | 3211-3218 |
| Number of pages | 8 |
| Journal | Journal of Mechanical Science and Technology |
| Volume | 31 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1 Jul 2017 |
Keywords
- Automotive brake drum
- Finite element analysis
- Modal analysis
- Sound radiation
- Vibro-acoustic characterization