Browse Publications Technical Papers 2019-01-5024

Polyurethane Foam Performances’ Influence on Body Pressure Distribution on an Automotive Seat 2019-01-5024

From the microstructure point of view, the relationship of car seat comforts, including the static and dynamic comfort, and the polyurethane foam performance of its cushion has been analyzed. In this paper, polyurethane cushion performances associated with the seat static comfort have been mainly discussed. And their quantizing relation is obtained. How to apply the pressure gradient, one of body pressure distribution parameters, to optimize automobile seat comfort has been analyzed in detail. The findings suggest maximum and mean values of body pressures increase by 0.09 KPa and 0.04 KPa with the cushion foam hardness (Ph) increasing 1 KPa, respectively. The pressure gradient is little dependent on the cushion foam hardness within the range of Ph=4 ~ 5 KPa. Furthermore, the foam thickness under the hip should be greater 80 mm in order to reduce subcutaneous stresses under conditions of Ph= 6.2 KPa.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 40% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.