NDLI: Experimental studies for determining human discomfort response to vertical sinusoidal vibration

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Experimental studies for determining human discomfort response to vertical sinusoidal vibration

Content Provider	NASA Technical Reports Server (NTRS)
Author	Leatherwood, J. D. Dempsey, T. K.
Copyright Year	1975
Description	A study was conducted to investigate several problems related to methodology and design of experiments to obtain human comfort response to vertical sinusoidal vibration. Specifically, the studies were directed to the determination of (1) the adequacy of frequency averaging of vibration data to obtain discomfort predictors, (2) the effect of practice on subject ratings, (3) the effect of the demographic factors of age, sex, and weight, and (4) the relative importance of seat and floor vibrations in the determination of measurement and criteria specification location. Results indicate that accurate prediction of discomfort requires knowledge of both the acceleration level and frequency content of the vibration stimuli. More importantly, the prediction of discomfort was shown to be equally good based upon either floor accelerations or seat accelerations. Furthermore, it was demonstrated that the discomfort levels in different seats resulting from similar vibratory imputs were equal. Therefore, it was recommended that criteria specifications and acceleration measurements be made at the floor location. The results also indicated that practice did not systematically influence discomfort responses nor did the demographic factors of age, weight, and sex contribute to the discomfort response variation.
File Size	4485235
Page Count	58
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19760005640
Archival Resource Key	ark:/13960/t10p5v114
Language	English
Publisher Date	1975-11-01
Access Restriction	Open
Subject Keyword	Behavioral Sciences Human Reactions Human Factors Engineering Vertical Motion Masking Vibration Effects Comfort Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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