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A Finite Element Material Model and Method for Predicting the Cumulative Behavior of Energy Absorbing Components in Thermoplastic Bumper Systems Subjected to Multiple Impacts
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 05, 2001 by SAE International in United States
Annotation ability available
Event: SAE 2001 World Congress
The paper describes a finite element procedure and material model that can be used to predict the post-impact geometry of a thermoplastic bumper energy absorber. The material used in the study is a thermoplastic PC/PBT blend. The methodology presented determines the final geometric shape based on a new finite element material model. The material model uses a secant return modulus that is a function of the plastic strain. The conversion of material data into a finite element material model, along with a finite element procedure for analyzing multiple impacts, is discussed. Comparisons of finite element predictions to test data are also presented.
CitationFerfecki, F., "A Finite Element Material Model and Method for Predicting the Cumulative Behavior of Energy Absorbing Components in Thermoplastic Bumper Systems Subjected to Multiple Impacts," SAE Technical Paper 2001-01-0352, 2001, https://doi.org/10.4271/2001-01-0352.
- “Material Characterization for Predicting Impact Performance of Plastic Parts,” SAE Paper 1999-01-3178 Woods Joseph T. Trantina Gerald G.