Mechanical vibration and shock — Range of idealized values to characterize human biodynamic response under whole-body vibration

This document describes the range of idealized values of the apparent mass modulus and phase applicable to seated individuals with and without a back support subjected to x-, y- and z axis sinusoidal or broad-band random vibration and to standing individuals subjected to z axis sinusoidal or broad-band random vibration under specific experimental conditions. Additionally, this document describes the range of idealized values of seat-to-head transmissibility modulus and phase applicable to seated individuals without a back support subjected to z axis sinusoidal or broad-band random vibration.

The ranges of idealized values defined in this document are considered to be valid for subjects on a rigid seat (or standing on a rigid platform for z-axis only), with feet supported and vibrated. The range of idealized seat-to-head transmissibility values is considered to be applicable also to the condition with the feet hanging freely. For seated individuals subjected to sinusoidal or broad-band random vibration, the apparent mass values are defined over the frequency range of 0,5 Hz to 10 Hz for the x axis and y axis, and over the frequency range of 0,5 Hz to 20 Hz for the z axis. The frequ