A Nonlinear Viscoelastic Model for Polyurethane Foams Automobile Safety Laboratory, University of Virginia

Format:

Conference/Event

Author/Creator:

Darvish, Kurosh K., author.

Conference Name:

International Congress & Exposition (1999-03-01 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

This paper investigates the viscoelastic behavior of polyurethane foams. A three-dimensional single hereditary integral nonlinear viscoelastic model is developed using the results of stress relaxation experiments in compression, tension, and shear. The material behavior is characterized with the instantaneous dilatational and deviatoric elastic responses together with the normalized relaxation functions. The relaxation of the material is described using three different functions for high compression (above 7% strain), low compression/tension, and shear. The material model is implemented in the LS-DYNA3D program and is validated by comparing the numerical and experimental results

Notes:

Vendor supplied data

Publisher Number:

1999-01-0299

Access Restriction:

Restricted for use by site license