The consistent finding of a nonlinearity in the human body apparent mass has gradually received more attention when modelling biodynamic responses of the human body. However, the factors causing the nonlinearity and the extent of the nonlinearity are not yet understood. Investigators have mainly speculated on causality of the nonlinearities rather than designed experiments to test hypothetical explanations for the nonlinearity. This paper aims to identify variables governing the nonlinear responses of the seated human body during vertical whole-body vibration. The apparent mass data and experimental conditions from six of the more relevant studies are compared. Explanations of the mechanisms controlling nonlinear behaviour are also compared. The dominant variables are classified as: posture, muscle tone, dynamics of buttocks tissue, and geometric nonlinearity.
|Publication status||Published - 2004|
|Event||The 39th United Kingdom Group Meeting on Human Responses to Vibration - Ludlow, Shropshire, England|
Duration: 15 Sept 2004 → 17 Sept 2004
|Conference||The 39th United Kingdom Group Meeting on Human Responses to Vibration|
|City||Ludlow, Shropshire, England|
|Period||15/09/04 → 17/09/04|