This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Calculating Three Dimensional Stiffness Coefficients for Use in Three Dimensional Simulation Modeling for Accident Reconstruction
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 01, 2014 by SAE International in United States
Annotation ability available
Numerous studies have validated SIMON and DyMESH with respect to vehicle dynamics and crash analysis for accident reconstruction. The impetus for this paper is to develop an accessible methodology for calculating three-dimensional stiffness coefficients for HVE-SIMON and DyMESH. This method uses acceleration-time data (crash pulse) from a vehicle crash test, data that is widely available through the National Highway Traffic Safety Administration (NHTSA). The crash pulse, along with vehicle mass and impact speed, are used to calculate the force acting on the vehicle and the associated vehicle deflection time history. A technique for determining the area-deflection function is created from a computer model of the vehicle, HVE-SIMON, and basic photo-editing software. The calculated force divided by the associated area function (F/A) is plotted versus deflection and a third-order polynomial is then fit to the curve. The coefficients of this third-order polynomial are the A, B, C, and D stiffness coefficients. The resulting crash pulse and displacement-time history as predicted by HVE-SIMON using the derived three dimensional stiffness coefficients, are compared to the data from the NHSTA crash tests.
|Technical Paper||Calculating Non-Linear Frontal Stiffness Coefficients|
|Technical Paper||Simulating Moving Motorcycle to Moving Car Crashes|
|Technical Paper||Vehicle Crash Severity Assessment in Lateral Pole Impacts|
CitationCornetto, A., Suway, J., Wahba, R., and Bayan, F., "Calculating Three Dimensional Stiffness Coefficients for Use in Three Dimensional Simulation Modeling for Accident Reconstruction," SAE Technical Paper 2014-01-0473, 2014, https://doi.org/10.4271/2014-01-0473.
- Gilbert , B. , Jadischke , R. , McCarthy , J. A Method to Determine Non-Linear Crush for Use in HVE HVE White Paper WP-2013-4
- Campbell , K. Energy Basis for Collision Severity SAE Technical Paper 740565 1974 10.4271/740565
- Prasad , A. CRASH3 Damage Algorithm Reformulation for Front and Rear Collisions SAE Technical Paper 900098 1990 10.4271/900098
- Suway , J. , Cornetto , A. , Wahba , R. , Swanson , J. , Bayan , F. Three Dimensional Simulation of a Crash Test Series in SIMON - Utilizing A, B, C, and D Stiffness Coefficients Collision Magazine
- Hovenga , P. , Spit , H. , Uijldert , M. , and Dalenoort , A. Improved Prediction of Hybrid-III Injury Values Using Advanced Multibody Techniques and Objective Rating SAE Technical Paper 2005-01-1307 2005 10.4271/2005-01-1307
- Eriksson , L. , Zellmer , H. Assessing the BioRID II Repeatability and Reproducibility by Applying the Object Rating Method (ORM) on Rear-End Sled Tests Enhanced Safety of Vehicles (ESV) Paper Number 07-0201