Department of Mechanical Engineering, Unit Catalogue 2008/09
ME50155 Mechanical vibrations & noise
| Credits: 6 |
| Semester: 1|
|Assessment: CW 20%, EX 80%|
Aims: To introduce quantitative aspects of noise control and to give an appreciation of some of the problems involved.
To acquaint the student with more advanced aspects of vibration.
On successful completion of the unit the student will have:
* Calculated sound pressure level given relevant power and material data. Estimated the reduction in sound pressure level that could be achieved by the use of a barrier or enclosure.
* Used phase-plane plots and energy methods to analyse non-linear vibration problems.
* Applied harmonic balance to solve Rayleigh's equation to obtain limit cycle solutions and also to solve Duffing's equation and thus to explain jump phenomena.
Problem solving; numeracy; working independently.
Response of the ear, noise exposure, code of practice; noise isolation and absorption; barriers and enclosures. Nonlinear vibration. Duffing's equation, Rayleigh's equation. Phase-plane plots. Topics for self study.