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Theoretical relationship between vibration transmissibility and driving-point response functions of the human body.

Authors
Dong-RG; Welcome-DE; McDowell-TW; Wu-JZ
Source
J Sound Vib 2013 Nov; 332(24):6193-6202
NIOSHTIC No.
20043089
Abstract
The relationship between the vibration transmissibility and driving-point response functions (DPRFs) of the human body is important for understanding vibration exposures of the system and for developing valid models. This study identified their theoretical relationship and demonstrated that the sum of the DPRFs can be expressed as a linear combination of the transmissibility functions of the individual mass elements distributed throughout the system. The relationship is verified using several human vibration models. This study also clarified the requirements for reliably quantifying transmissibility values used as references for calibrating the system models. As an example application, this study used the developed theory to perform a preliminary analysis of the method for calibrating models using both vibration transmissibility and DPRFs. The results of the analysis show that the combined method can theoretically result in a unique and valid solution of the model parameters, at least for linear systems. However, the validation of the method itself does not guarantee the validation of the calibrated model, because the validation of the calibration also depends on the model structure and the reliability and appropriate representation of the reference functions. The basic theory developed in this study is also applicable to the vibration analyses of other structures.
Keywords
Vibration; Vibration-exposure; Exposure-levels; Risk-factors; Analytical-processes; Humans; Men; Women; Posture; Body-mechanics; Models
Contact
Ren G. Dong, ECTB/HELD/NIOSH/CDC, 1095 Willowdale Road, MS L-2027, Morgantown, WV 26505
CODEN
JSVIAG
Publication Date
20131125
Document Type
Journal Article
Email Address
rkd6@cdc.gov
Fiscal Year
2014
NTIS Accession No.
NTIS Price
Identifying No.
M082013
Issue of Publication
24
ISSN
0022-460X
NIOSH Division
HELD
Priority Area
Construction
Source Name
Journal of Sound and Vibration
State
WV
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