1970-02-01

A Simulation of the Dynamic Proprieties of Energy Absorbing Materials 700425

In the past viscoelastic materials have been simulated with springs and dampers. It was found that this simulation was very poor for polyurethane foam, a viscoelastic material having general use.
This paper describes techniques for simulating the force-penetration properties of viscoelastic materials. It is based on results of pendulum impact tests on polyurethane foam. Sample thickness, impact velocity, and impactor shape were varied, with four replications of each test. The simulation accounts for the effects of the variables and gives a very close approximation to the test data.
A dynamic-property comparison index is suggested for evaluating foam materials. This index is a ratio of absorbed energy to peak deceleration.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.

Due to current capacity constraints, printed versions of our publications - including standards, technical papers, EDGE Reports, scholarly journal articles, books, and paint chips - may experience shipping delays of up to four to six weeks. We apologize for any inconvenience.
X