𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The effects of vibration frequency and direction on the location of areas of discomfort caused by whole-body vibration

✍ Scribed by E.M. Whitham; M.J. Griffin

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
611 KB
Volume
9
Category
Article
ISSN
0003-6870

No coin nor oath required. For personal study only.

✦ Synopsis

Although much research has been devoted to the determination of equivalent comfort contours for human response to whole-body vibration little consideration has been given to the source of the feelings that give rise to such comfort contours. This paper shows that for vertical vibration there is a distinct difference in the locations of discomfort on the body at different frequencies and that the locations are not much affected by the vibration level. For horizontal motions, feelings of discomfort predominated in the lower abdomen and buttocks irrespective of vibration frequency or direction. A semantic scaling technique indicates the maximum sensitivity to vertical vibration acceleration in the 4 to 16 Hz range, but for both fore-and-aft and lateral vibration there is a decrease in sensitivity with increasing frequency above 2Hz.

πŸ“œ SIMILAR VOLUMES

Effects of frequency, magnitude, damping
Effects of frequency, magnitude, damping, and direction on the discomfort of vertical whole-body mechanical shocks
✍ Se-Jin Ahn; Michael J. Griffin πŸ“‚ Article πŸ“… 2008 πŸ› Elsevier Science 🌐 English βš– 422 KB

The discomfort of seated subjects exposed to a wide range of vertical mechanical shocks has been studied experimentally. Shocks were produced from responses of single degree-of-freedom models with 16 fundamental frequencies (0.5-16 Hz) and four damping ratios (0.05, 0.1, 0.2 and 0.4) to half-sine fo

The effect of the position of the axis o
The effect of the position of the axis of rotation on the discomfort caused by whole-body roll and pitch vibrations of seated persons
✍ K.C. Parsons; M.J. Griffin πŸ“‚ Article πŸ“… 1978 πŸ› Elsevier Science 🌐 English βš– 872 KB

Methods of predicting the discomfort caused by rotational vibration of subjects seated away from the axis of rotation from a knowledge of the discomfort caused by single-axis vibration were investigated. The method of category production was used, in which ten seated subjects adjusted the level of s

ON THE HEALTH RISK OF THE LUMBAR SPINE D
ON THE HEALTH RISK OF THE LUMBAR SPINE DUE TO WHOLE-BODY VIBRATIONβ€”THEORETICAL APPROACH, EXPERIMENTAL DATA AND EVALUATION OF WHOLE-BODY VIBRATION
✍ H. Seidel; R. BlΓΌthner; B. Hinz; M. Schust πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 257 KB

The guidance on the effects of vibration on health in standards for whole-body vibration (WBV) does not provide quantitative relationships between WBV and health risk. The paper aims at the elucidation of exposure-response relationships. An analysis of published data on the static and dynamic streng