Abstract: The 64-km/h 40% offset deformable barrier (ODB) frontal crash is an important item in the China
New Car Assessment Program (C-NCAP) and inthe Euro-NCAP test. This paper calculates the deformation at
pedal fixing area using a vehicle crash simulation model and analyzes deformation mode of side rail in engine
room to solve the excessive pedal intrusion into a vehicle in 40% offset crash, and gives an optimized solution
to vehicle body structure. The simulation validation results show that acceleration pedal reward is reduced by
48.5% with the upward being reduced by 29.1%, therefore, center tunnel area strength is enhanced, and pedal
fixing area structural deformation is lessened incrashes,which improves the energy-absorbing effect of left side
rail in engine room, perfects deformation mode, and reduces pedal intrusion. Therefore, the optimized solution
solves excessive pedal intrusion of this vehicle, therefore improving vehicle safety.

Key words: vehicle safety, frontal crash, offset crash, offset deformable barrier (ODB), pedal intrusion, optimization, new car assessment program (NCAP)