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Analysis of non-linear response of the human body to vertical whole-body vibration

Recurso electrónico / electronic resource
Registro MARC
Tag12Valor
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001  MAP20140045600
003  MAP
005  20141203104158.0
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24500‎$a‎Analysis of non-linear response of the human body to vertical whole-body vibration‎$c‎Marco Tarabini...[et.al]
520  ‎$a‎The human response to vibration is typically studied using linear estimators of the frequency response function, although different literature works evidenced the presence of non-linear effects in whole-body vibration response. This paper analyses the apparent mass of standing subjects using the conditioned response techniques in order to understand the causes of the non-linear behaviour. The conditioned apparent masses were derived considering models of increasing complexity. The multiple coherence function was used as a figure of merit for the comparison between the linear and the non-linear models. The apparent mass of eight male subjects was studied in six configurations (combinations of three vibration magnitudes and two postures). The contribution of the non-linear terms was negligible and was endorsed to the change of modal parameters during the test. Since the effect of the inter-subject variability was larger than that due to the increase in vibration magnitude, the biodynamic response should be more meaningfully modelled using a linear estimator with uncertainty rather than looking for a non-linear modelling.
7730 ‎$w‎MAP20100019818‎$t‎Ergonomics : the international journal of research and practice in human factors and ergonomics‎$d‎Oxon [United Kingdom] : Taylor & Francis, 2010-‎$x‎0014-0139‎$g‎03/11/2014 Volumen 57 Número 11 - noviembre 2014