Biomechanical Analysis of Rear-End Collision Integrating Subject-Specific Posture & Vehicle Fit

Biomechanical Analysis of Rear-End Collision Integrating Subject-Specific Posture & Vehicle Fit

Background

Available kinematic and kinetic data with respect to low speed rear-end collisions are typically limited to volunteer, cadaver, and anthropomorphic test device tests seated in a wide array of test vehicles. However, real-world collisions occur in permutations where the occupant and vehicle being analyzed does not match a previously tested occupant-vehicle pair.

Approach

By scanning the subject-specific occupant and vehicle pairing, custom anthropomorphic postures and vehicle configurations were constructed in a simulation environment. Event specific crash data collected from the vehicle was applied in the simulation, and kinetic results compared to previously published low speed rear-end test crash data.

Takeaway

The results from the subject-specific analysis were consistent with previously conducted low speed rear-end crash test data with respect so spinal compression and linear head acceleration. While this indicates that the combination of scanning and custom simulation can be utilized to evaluate specific collisions, the results also demonstrate that effects of the occupant and vehicle specifics geometries did not have a significant effect on the metrics evaluated.

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