The vibration isolation e$ciency of seating has been evaluated in 100 work vehicles in 14 categories (cars, vans, lift trucks, lorries, tractors, buses, dumpers, excavators, helicopters, armoured vehicles, mobile cranes, grass rollers, mowers and milk #oats). Seat isolation e$ciency, expressed by th
Effects of vibration frequency and postural changes on human responses to seated whole-body vibration exposure
β Scribed by C. L. Zimmermann; Thomas M. Cook
- Publisher
- Springer-Verlag
- Year
- 1997
- Tongue
- English
- Weight
- 988 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0340-0131
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The e!ect of variations in posture and vibration magnitude on apparent mass and seat-to-pelvis pitch transmissibility have been studied with vertical random vibration over the frequency range 1)0}20 Hz. Each of 12 subjects was exposed to 27 combinations of three vibration magnitudes (0)2, 1)0 and 2)
The power absorbed by 12 male subjects during exposure to vertical whole-body vibration at six magnitudes of random vibration (0β’25, 0β’5, 1β’0, 1β’5, 2β’0 and 2β’5 ms -2 r.m.s.) has been measured in the laboratory. All subjects showed greatest absorbed power at about 5 Hz, but the frequency of this peak