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HOPE TO SEE Y'ALL THERE!
Our IPTM breakout sessions are:
- Tuesday from 1300 - 1430
- Thursday from 1000 - 1130
CONCLUSIONS
- A high speed crash test was presented in detail in Volume 15, Issue 2 of Collision Magazine. In the crash, documented EDR results had some anomalies which we have investigated. We found that the maximum G-limit of EDRs combined with adjustment of the start and end time of the Delta-V calculations to try to mimic the EDR software explains the main reasons for the anomaly in the EDR data and reports.
This article demonstrates that the interpretation of EDR results can be supplemented by the application of 3D simulation, such the msmac3D program. It is possible with computer simulation to supplement partial EDR results, to compare predicted and measured EDR time-histories and to test theories on data issues with EDRs. EDRs are NOT infallible, and they only make up a part of the data required for a complete crash investigation and reconstruction.
As a result of this preliminary investigation we have also performed an initial investigation of mimicking EDR integration algorithms to further help explain and understand EDR anomalies. We plan to publish on that topic soon.
A few additional research projects combining simulation and EDR data we plan to undertake include testing the time history waveforms produced by range limitations on accelerometer readings, effects of tire-terrain friction values and corresponding vehicle/ground forces on EDR data, accelerometer (EDR) positions and potential offsets and movements during collision interaction and further exploration of the effects of pitch and roll movements on EDRdata.