AS 2993.1-1987

Defines the mechanical characteristics of the human body in the form of whole body mechanical input impedance.

This Standard defines the mechanical characteristics of the human body in the form of whole body mechanical input impedance. Available information is restricted to the frequency range from 0.5 Hz to 30 Hz for a limited number of body positions. (See Figures A1, B1, and C1 for positions of input.)It is expected that this impedance information will be used in the analytical design of isolation systems such as platforms, seats, and vehicle suspensions. Its use is therefore limited to the development of mathematical models which represent the human body as part of a mechanical system. It should not be used to evaluate physiological response or tolerance.Mechanical systems should be designed to reduce detrimental vibration effects on the human body according to AS 2670 and other associated documents.It should be remembered that driving point impedance measurements are not necessarily the best approach if modelling of the complete (human) system is intended.