Department of Mechanical Engineering, Unit Catalogue 2008/09 |
ME30033 Mechanical vibrations & noise |
| Credits: 6 |
| Level: Honours |
| Semester: 1 |
| Assessment: EX 100% |
| Requisites: |
| Before taking this unit you must take ME20023 or take ME20024 or take ME20071 |
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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. Learning Outcomes: After taking this unit the student should be able to: * Calculate sound pressure level given relevant power and material data. Estimate the reduction in sound pressure level that could be achieved by the use of a barrier or enclosure. * Convert equations of motion into principal coordinates. * Describe how to measure normal modes of structures. * Apply 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. Skills: Problem solving; numeracy; working independently. Content: Response of the ear, noise exposure, code of practice; noise isolation and absorption; barriers and enclosures. modal analysis and testing; nonlinearity. Topics for self study that could be examined. |