Restraint System & Occupant Simulation Capabilities Systems Performance Department August, 2000.

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Presentation transcript:

Restraint System & Occupant Simulation Capabilities Systems Performance Department August, 2000

Restraint System & Occupant Simulation Capabilities Identify and evaluate restraint system parameters with respect to occupant protection –Driver, passenger, seat-mounted side, curtain air bags –Seat belts –Steering wheels –Sensors Perform mathematical modeling (PAMSAFE & MADYMO) Perform dynamic sled tests to evaluate systems Provide design direction to application engineering team Responsibilities - Frontal, Side, Rollover Impact

Restraint System & Occupant Simulation Capabilities Restraint Component Level –Bag geometry design (shape, volume, coverage) –Inflator selection (output, slope, multi-stage) –Seat belt (webbing, load limiting, pretensioner) –Steering wheel (strength) –Sensors (fire time) Restraint System Level (simulation of crash tests) –Frontal: FMVSS 208, NCAP, Offset frontal –Side: FMVSS 214, ECE R95, LINCAP, Pole –Rollover: FMVSS 208, Screw Ramp, Curb Trip Systems Performance Process: Use of CAE

Restraint System & Occupant Simulation Capabilities System and Testing Program Development Process

Restraint System & Occupant Simulation Capabilities Restraint System Optimization (50th, Mid, NCAP)

Restraint System & Occupant Simulation Capabilities Systems Approach to Restraint Design

Restraint System & Occupant Simulation Capabilities Simulation Verification for Different Crash Speeds

Restraint System & Occupant Simulation Capabilities System Correlation Sled Results: HIC=1166 Chest Clip=54.0g Model Results: HIC=1156 Chest Clip=48.4g Correlate NCAP Model to NCAP Sled Test with Full Power Inflator

Restraint System & Occupant Simulation Capabilities Coupled 5th Female Driver OOPO Model Driver Inflator OOP Modeling

Restraint System & Occupant Simulation Capabilities Rollover: Occupant Kinematic Assessment

Restraint System & Occupant Simulation Capabilities Rollover Curtain Bag

Restraint System & Occupant Simulation Capabilities Kinematic Sequence: Chin on Top of Module Driver Inflator OOP Modeling

Restraint System & Occupant Simulation Capabilities Comparison Test vs. Simulation Driver Inflator OOP Modeling

Restraint System & Occupant Simulation Capabilities Out of Position Child Simulation Return to Agenda

Restraint System & Occupant Simulation Capabilities Out of Position Child Simulation & Test

Restraint System & Occupant Simulation Capabilities MADYMO: Knee Air Bag with an Aluminum Load Distributor MADYMO: Same Knee Air Bag without a Load Distributor Inflatable Knee Bolster Modeling

Restraint System & Occupant Simulation Capabilities

Inflatable Knee Bolster Test Comparison Return to Agenda