Output details

Modelling of fore-and-aft apparent mass of the human body and the transmissibility of seat backrest

Significance of output:

There are very few models of human response to fore-and-aft excitation and no known models that combine the dynamic response of the human body with the dynamic response of seats to fore-and-aft excitation. In this paper a combined human body and seat system model of response to fore-and-aft excitation was evolved and demonstrated step by step. Good agreement was achieved between model predictions and the measured apparent mass and transmissibility to seat backrests. The model can be applied in the optimisation of vehicle seats and occupant system dynamics so as to reduce the fore-and-aft vibration transmitted to the human body. It has been used by Ford Motor Company for predicting vehicle tip-in response and assisting the optimisation of the drive-line characteristics of automobiles.