Browse Publications Technical Papers 2010-01-1013
2010-04-12

Simulation Based Analysis of Test Results 2010-01-1013

The use of a newly developed approach results in a highly accurate three dimensional analysis of the occupant movement. The central point of the new method is the calculation of precise body-trajectories by fitting standard sensor-measurements to video analysis data. With the new method the accuracy of the calculated trajectories is better than 5 to 10 millimeters. These body trajectories then form the basis for a new multi-body based numerical method, which allows the three dimensional reconstruction of the dummy kinematics. In addition, forces and moments acting on every single body are determined. In principle, the body movement is reconstructed by prescribing external forces and moments to every single body requiring that it follows the measured trajectory. The newly developed approach provides additional accurate information for the development engineers. For example the motion of dummy body parts not tracked by video analysis can be determined. Furthermore the knowledge of the external forces and moments helps in the interpretation of the performance of the restraining systems. The application of the approach is shown on the basis of simulation-models and experimental data.

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