THE OPTIMUM USE OF UNCONSTRAINED LAYER DAMPING TREATMENTS.
Abstract
The report investigates the effect of concentrating the treatment in the regions of highest bending moment in order to use all the material more effectively. Three methods analysis are presented, two of them being approximate but relatively rapid in use. The third has been used in extensive digital computer calculations to determine the effectiveness of given quantities of treatment, having given stiffnesses, when distributed over different proportions of the length of a vibrating, simply supported strip. The effectiveness was assessed using certain criteria which apply to different problems, e.g. to the problems of reducing harmonic, resonant vibration amplitudes, or inertia forces exerted by randomly vibrating panels, etc. An experiment is described which confirms the validity of the theoretical approaches. The effects of temperature changes on the criteria values are also briefly considered, and it is concluded that the temperature bandwidth of the treatment when partially covering the plate is not significantly different from that when uniformly covering the plate. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1961
- Accession Number
- AD0638141
Entities
People
- D. J. Mead
- T. G. Pearce
Organizations
- University of Southampton