Frontal crash simulation of a Dodge Neon BIW using HyperMesh, Radioss.

The objective of this project was to give a preliminary experience into setting up real-life simulation setup for full frontal barrier crash modeling using HyperMesh as the Pre-processor and Radioss as the solver. Only a partial Body In-White structure of Dodge Neon was used. With 74 components, and additional masses to balance the C.G. of the entire vehicle, the model weight of this partial BIW structure was set to 700 kg. A general-purpose penalty-based contact is used to model self-impact contact conditions, and initial velocity conditions are defined. Various cross-sections are set up on the rails, A-pillar, and Headlight bracket to monitor sectional forces. Accelerometer sensors are set up at the base of the B-pillar. The explicit simulation was run for 80ms with an initial velocity of 35 miles/hour (in accordance with FMVSS 208). The outputs evaluated were intrusions and sectional forces at the various sections of the model. This challenge was a practice in setting up physically-valid explicit simulations in HyperMesh.

a) Full-Scale Dodge Neon Model b)Partial BIW Structure considered for this project
Cross-sections defined for capturing sectional forces
Simulation Outputs – Forces and accelerations
Dodge-Neon BIW Simulation – Stress Contour

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