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Effect of lumbar support on vibration transmission of a car seat with occupant exposed to fore-and-aft whole-body vibration

Effect of lumbar support on vibration transmission of a car seat with occupant exposed to fore-and-aft whole-body vibration
Effect of lumbar support on vibration transmission of a car seat with occupant exposed to fore-and-aft whole-body vibration
Modern car seats are often equipped with adjustable lumbar supports for reducing fatigue and improving ride comfort in different driving conditions. Studies on the effect of lumbar support on seat dynamic performance and ride comfort are not often seen. This experimental study was designed to investigate how lumbar support affects static and dynamic characteristics of the driver seat of a sport utility vehicle. The load-deflection curves of the backrest cushion of the car seat were measured in three extra lumbar support conditions (regarded as “No”, “Half” and “Full” lumbar supports). The acceleration transmissibilities to the backrest and to the seat pan in the fore-and-aft direction with different lumbar support conditions were measured with 8 male subjects exposed to random fore-and-aft vibration from 1 to 30 Hz with three magnitudes (0.25, 0.5, 1.0 ms-2 r.m.s), using a Multi-Axis Simulation Table. It was found that the lumbar area of the backrest became stiffer with increased extra lumbar support. The peak at the resonance of the acceleration transmissibility from the seat base to the backrest decreased, while that in the transmissibility from the seat base to the seat pan increased, when increasing the lumbar support. The softening effect was also apparent with increasing vibration magnitude. It is anticipated that changing the lumbar support will affect the static comfort of the seat and also the vibration transmission through the seat to occupant.
Zhou, Hui
66ce13ff-9d79-43d5-b35d-d4b809b0ebf1
Qiu, Yi
ef9eae54-bdf3-4084-816a-0ecbf6a0e9da
Lot, Roberto
ceb0ca9c-6211-4051-a7b8-90fd6f0a6d78
Zhou, Hui
66ce13ff-9d79-43d5-b35d-d4b809b0ebf1
Qiu, Yi
ef9eae54-bdf3-4084-816a-0ecbf6a0e9da
Lot, Roberto
ceb0ca9c-6211-4051-a7b8-90fd6f0a6d78

Zhou, Hui, Qiu, Yi and Lot, Roberto (2016) Effect of lumbar support on vibration transmission of a car seat with occupant exposed to fore-and-aft whole-body vibration. 51 UK Conference Human on Responses to Vibration, United Kingdom. 14 - 16 Sep 2016.

Record type: Conference or Workshop Item (Paper)

Abstract

Modern car seats are often equipped with adjustable lumbar supports for reducing fatigue and improving ride comfort in different driving conditions. Studies on the effect of lumbar support on seat dynamic performance and ride comfort are not often seen. This experimental study was designed to investigate how lumbar support affects static and dynamic characteristics of the driver seat of a sport utility vehicle. The load-deflection curves of the backrest cushion of the car seat were measured in three extra lumbar support conditions (regarded as “No”, “Half” and “Full” lumbar supports). The acceleration transmissibilities to the backrest and to the seat pan in the fore-and-aft direction with different lumbar support conditions were measured with 8 male subjects exposed to random fore-and-aft vibration from 1 to 30 Hz with three magnitudes (0.25, 0.5, 1.0 ms-2 r.m.s), using a Multi-Axis Simulation Table. It was found that the lumbar area of the backrest became stiffer with increased extra lumbar support. The peak at the resonance of the acceleration transmissibility from the seat base to the backrest decreased, while that in the transmissibility from the seat base to the seat pan increased, when increasing the lumbar support. The softening effect was also apparent with increasing vibration magnitude. It is anticipated that changing the lumbar support will affect the static comfort of the seat and also the vibration transmission through the seat to occupant.

Text
Hui Zhou_Effect of lumbar support on vibration transmission of a car seat with occupant exposed to fore-and-aft whole-body vibration - Accepted Manuscript
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More information

Published date: 14 September 2016
Venue - Dates: 51 UK Conference Human on Responses to Vibration, United Kingdom, 2016-09-14 - 2016-09-16
Organisations: Human Sciences Group, Energy Technology Group, Education Hub

Identifiers

Local EPrints ID: 411612
URI: http://eprints.soton.ac.uk/id/eprint/411612
PURE UUID: 3b0d8301-11f9-45ff-bab0-2056de4bcfed
ORCID for Roberto Lot: ORCID iD orcid.org/0000-0001-5022-5724

Catalogue record

Date deposited: 21 Jun 2017 16:31
Last modified: 01 Aug 2020 01:41

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