Abstract：
:The second part of this study of the six axes of head motion caused by translational seat vibration is concerned with the effect of fore-and-aft (x-axis) and lateral (y-axis) seat vibration. Seat-to-head transmissibilities have been determined at frequencies up to 16 Hz for each of the three translational and three rotational axes of the head during exposure to random vibration of the seat. Repeatability measures within a single subject and studies of the variability across a group of twelve subjects have been conducted with two seating conditions: a rigid seat with a backrest, and the same seat with no backrest. Fore-and-aft seat motion mainly resulted in head motion within the mid-sagittal plane (x-z plane). Without the backrest, transmissibilities for the fore-and-aft, vertical and pitch axes of the head were greatest at about 2 Hz. The backrest greatly increased head vibration at frequencies above 4 Hz and caused a second peak in the transmissibility curves at about 6 to 8 Hz. Lateral seat motion mainly caused lateral head motion with a maximum transmissibility at about 2 Hz. The backrest had little effect on the transmission of lateral vibration to the head. For both axes of excitation inter-subject variability was much greater than intra-subject variability.
journal_name
J Biomechjournal_title
Journal of biomechanicsauthors
Paddan GS,Griffin MJdoi
10.1016/0021-9290(88)90170-4subject
Has Abstractpub_date
1988-01-01 00:00:00pages
199-206issue
3eissn
0021-9290issn
1873-2380pii
0021-9290(88)90170-4journal_volume
21pub_type
杂志文章abstract：:The orientation of the line of pull and geometrical characteristics of rat semimembranosus lateralis muscle (SM1) were measured in a plane during isometric contractions at different muscle lengths. The orientation of the line of pull was always similar in our plane of analysis. It was always aligned with the external ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/0021-9290(94)90051-5
更新日期：1994-09-01 00:00:00
abstract：:To know the contributions of blood pressure induced stress to the progression of atherosclerosis and the rupture of atheroma, cross-sectional distributions of stresses in atherosclerotic walls were calculated by finite element method, using stress-strain data of aortic walls and atherosclerotic plaques obtained from h...
journal_title：Journal of biomechanics
pub_type： 杂志文章
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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更新日期：1995-11-01 00:00:00
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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更新日期：2011-11-10 00:00:00
abstract：:Many soft biological tissues possess a considerable surface stress, which plays a significant role in their biophysical functions, but most previous methods for characterizing their mechanical properties have neglected the effects of surface stress. In this work, we investigate the micropipette aspiration method to me...
journal_title：Journal of biomechanics
pub_type： 杂志文章
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journal_title：Journal of biomechanics
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journal_title：Journal of biomechanics
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journal_title：Journal of biomechanics
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journal_title：Journal of biomechanics
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更新日期：2009-03-26 00:00:00
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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更新日期：2014-12-18 00:00:00
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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更新日期：2000-06-01 00:00:00
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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更新日期：2010-03-03 00:00:00
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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更新日期：2015-07-16 00:00:00
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journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2010.08.001
更新日期：2010-12-01 00:00:00
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journal_title：Journal of biomechanics
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更新日期：2018-07-25 00:00:00
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更新日期：1982-01-01 00:00:00
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journal_title：Journal of biomechanics
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更新日期：2020-05-07 00:00:00
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journal_title：Journal of biomechanics
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更新日期：2011-01-11 00:00:00
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journal_title：Journal of biomechanics
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更新日期：1994-03-01 00:00:00
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更新日期：2010-05-07 00:00:00
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更新日期：2011-11-10 00:00:00
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更新日期：2016-08-16 00:00:00
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journal_title：Journal of biomechanics
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更新日期：2018-02-08 00:00:00
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journal_title：Journal of biomechanics
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更新日期：1991-01-01 00:00:00
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更新日期：2021-01-19 00:00:00
abstract：:Mechanical properties of abdominal and thoracic arteries of 2mm in diameter were determined from adults Wistar rats. A tensile testing instrument was used to obtain stress/strain curves with arteries immersed in physiological buffer at 37 degrees C. A displacement was applied on all arteries with various frequencies (...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2008.04.017
更新日期：2008-07-19 00:00:00
