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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11407
Title: Effects of vibration magnitude and posture on seat-to-head-transmissibility responses of seated occupants exposed to lateral vibration
Authors: Bhiwapurkar M.K.
Saran V.H.
Harsha S.P.
Published in: International Journal of Vehicle Noise and Vibration
Abstract: In an attempt to define how train vibration and motion affect passenger comfort, an experimental study has been conducted to show the effect of variations in posture and vibration magnitude on head motion in three translational directions (fore-and-aft, lateral and vertical) with seat vibration in lateral direction. Thirty healthy male subjects were exposed to random vibration in lateral axis with three excitation magnitudes of 0.4, 0.8 and 1.2 m/s2 rms over the frequency range of 1-20 Hz. The data results are analysed in terms of seat-to-head-transmissibility response, phase and coherence for head motions in two sitting postures (backrest and forward lean). The seat-to-head-transmissibility response registered maximum head motion in lateral direction with single peak at 2 Hz in both the sitting posture. The response also reported an additional peak near 6 Hz in forward lean postures. The broad peak converged to a single peak at 2 Hz with reduction in seat-to-head-transmissibility response under the higher magnitude of lateral vibration, which was attributed to the softening effect of the human body. The STHT response yields only minimal effect on posture, particularly in the vicinity of the resonance only. Copyright © 2016 Inderscience Enterprises Ltd.
Citation: International Journal of Vehicle Noise and Vibration (2016), 12(1): 42-59
URI: https://doi.org/10.1504/IJVNV.2016.077472
http://repository.iitr.ac.in/handle/123456789/11407
Issue Date: 2016
Publisher: Inderscience Enterprises Ltd.
Keywords: Activity comfort
Biodynamic response
Bite bar
Lateral vibration
Seat-to-head-transmissibility response
ISSN: 14791471
Author Scopus IDs: 36633921800
6507475582
6603548398
Author Affiliations: Bhiwapurkar, M.K., Mechanical Engineering Department, O.P. Jindal University, Raigarh, Chhattisgarh, 496001, India
Saran, V.H., Noise and Vibration Control Lab., Mechanical and Industrial Engineering Department, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Harsha, S.P., Noise and Vibration Control Lab., Mechanical and Industrial Engineering Department, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Corresponding Author: Bhiwapurkar, M.K.; Mechanical Engineering Department, O.P. Jindal UniversityIndia; email: mahesh.bhiwapurkar@opjit.edu.in
Appears in Collections:Journal Publications [ME]

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