The vibration transmission of lift truck suspension seats
Abstract
The vibration isolation efficiencies of three suspension seats have been measured according to a draft standard for the vibration transmitted by the seats of lift trucks. The vertical vibration transmission ratios were measured with spectra corresponding to the z-axis motions of two classes of lift truck. The results of the measurements on each seat are presented in appendices. The effect of subject weight is discussed and the 50th percentile subject weight is suggested to replace the 55 (+0 to -3) kg and 98 (+5 to -0) kg subject weight recommended in the draft. End-stop impacts may be an important problem with real vehicle motion. It is suggested that a method of testing for end-stop impacts should be included in the standard.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- April 1995
- Bibcode:
- 1995STIN...9527844W
- Keywords:
-
- Performance Prediction;
- Suspension Systems (Vehicles);
- Trucks;
- Vibration Isolators;
- Vibration Measurement;
- Vibration Tests;
- Vibrational Spectra;
- Acceleration (Physics);
- Frequency Measurement;
- Human Reactions;
- Impact Loads;
- Vibration Simulators;
- Weight (Mass);
- Mechanical Engineering