Affiliation:
1. Department of Mechanical Engineering, The University of Birmingham
Abstract
The very rapid deceleration on impact of the platen (tup) in a drop forging machine is shown to be an important source of impulsive noise. An ‘explicit’ finite-difference method is used to calculate the sound pulse radiated by a platen in the form of a solid cylinder undergoing a deceleration given by where T is the impact time. The results are presented in dimensionless form, enabling the pulse to be calculated for a wide range of platen sizes and impact times.
Cited by
6 articles.
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1. The prediction of ringing noise of a drop hammer in a rectangular enclosure;The Journal of the Acoustical Society of America;1993-02
2. Analysis of a random repeated impact process;Journal of Sound and Vibration;1981-10
3. The Effect of Platen Shape on the Sound Produced by Platen Deceleration;Proceedings of the Twenty-First International Machine Tool Design and Research Conference;1981
4. A review of impact noise;The Journal of the Acoustical Society of America;1978-10
5. Acoustic radiation from the elastic impact of a sphere with a slab;Applied Acoustics;1978-10