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Technical PaperEffect of Strain Rate in Full Vehicle Frontal Crash Analysis

Paper #: 2000-01-0625 Published: 2000-03-06

DOI: 10.4271/2000-01-0625

Citation: Mahadevan, K., Liang, P ., and Fekete, J., "Effect of Strain Rate in Full

Vehicle Frontal C rash Analysis," SAE Technical Paper 2000-01-0625, 2000,

doi:10.4271/2000-01-0625.

Author(s): Kumar Mahadevan Paul Liang Jim Fekete

Affiliated: Ford Mo to r Co. Genera l Moto rs Corp

Abstract: The e ffect of strain rate in a full-vehicle fronta l crash analysis is

investigated. The strain rate properties obtained from the Auto-Steel

Partnership (A/S P) project are utilized in this investigation. Johnson-Cook material model that incorporates strain rate was used in the

analysis. Theanalysis was done with and without strain rate using

two vehicle front impact models. Results of the analysis were

compared to the test data for deceleration and dynamic crush. The

results from this study indicate that incorporating strain rate inthe

frontal crash analysis yields dynamic crush estimates that are closer

to test results. Therefore, strain rate material coefficients should be

considered for frontal crash analysis application.

Event: SAE 2000 Wo rld Congress

Sector: Automotive

Topic: CAD/ CAM / CAE Crash Re search Im pacttests

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