FRONT FLOOR REINFORCEMENT STRUCTURE FOR A VEHICLE HAVING A BATTERY PACK IN THE TUNNEL

摘要

A design and a production method of a front floor reinforcement structure 1 for a vehicle 3 having a battery pack 5 in the tunnel 7 designed to improve the energy absorption of the vehicle during a side impact by involving the front floor panel 11 in the energy absorption during the side impact. The front floor reinforcement structure 1 includes a front floor cross member 13 having a non-deformable portion 14 located on the end of the front floor cross member 13 closest to the side sill 9 and a deformable portion 16 located on the end of the front floor cross member 13 closest to the tunnel 7. The resistance to plastic deformation of the non-deformable portion 14 is greater than the resistance to plastic deformation of the deformable portion 16, which is itself greater than the resistance to plastic deformation of the front floor panel 11.