Study on Large Impact Deformation of Railway Passenger Carbody

In the course of the lightening of a vehicle, the lightening of car-body structure is very important. The lightening design of vehicle should guarantee the crashworthiness of the car body so as to realize self-structure passive safety. This paper utilizes ANSYS/LS-DYNA software to set up two finite element impact models of type 25 K hard berth passenger car body before and after lightening with a rigid wall. Then the displacement, acceleration and energy variation of the car body are analyzed and compared before and after lightening under the condition of impact speed 5.89 m/s and 11.8 m/s.