1997-02-24

New Polyurethane Polymers for Energy Absorbing Automotive Applications 970168

ABSTRACT

The National Highway Traffic Safety Administration (NHTSA) has enacted numerous Federal Regulations dealing with automotive occupant protection. This paper deals with the Federal Motor Vehicle Safety Standard #201 (Upper Interior Head Impact Protection), and describes a new series of polyurethane foams and polymers which are being developed to efficiently protect the occupant of a vehicle during a collision. These new energy absorbing polymers are being developed with a unique chemistry that yields a semi-rigid thermoformable foam with enhanced Energy Absorbing (EA) characteristics. This chemistry in combination with a revolutionary new manufacturing process developed by Foamex known as Controlled Pressure Polymerization or VPF yields a series of urethane polymers with unique properties. In addition, this paper covers a joint development program between Foamex and Lawrence Livermore National Laboratories (LLNL) in the area of finite element simulation of a Featureless, Free Motion Headform (FMH) impacting these unique foams and polymers.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 43% 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.
X