DEVELOPMENT OF MEASUREMENT TECHNIQUES FOR THE ANALYSIS OF TRACKED VEHICLE VIBRATION AND NOISE
Abstract
A comprehensive study was made of the noise and vibration characteristics of the M-113 Armored Personnel Carrier. Measurement techniques and instrumentation systems were evolved to define vibratory energy sources, transmission paths, and noise radiating sources of the vehicle. Measurement techniques were evelved for use by design personnel concerned with virtually any type of tracked vehicle. While instrumentation systems are simple and straightforward, when used with the systematic test sequence evolved, they serve to effectively evaluate noise offenders within and outside the vehicle. Results show that noise conditions within the M-113 vehicle are above the limits prescribed by most hearing damage criteria, at virtually all normal operating conditions. The track-sprocket wheel reaction and the track-idler wheel reaction were the chief sources of vibration, while predominant interior radiators vary with operating conditions. Important radiators include floor panels, engine access panels, and the variety of other thin metallic panels or components within the vehicle. Some consideration was given to treatment and redesign techniques which might be used to ameliorate existing noise conditions in the M- 113. Recommendations are given for further activity in the area of tracked vehicle noise control.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 30, 1964
- Accession Number
- AD0479349
Entities
People
- Cecil R. Sparks
- Charles L. Bates
Organizations
- Southwest Research Institute