Abstract:Based on the analysis of the movement of the door trim during the side impact and the simplification of the door trim intrusion velocity, a mass spring side impact sled test method which could reproduce multipoint movement of the door was established. Then a side impact sled model with dummy was established and its computer simulation showed that there was a high correlation of dummy injury between the injury gaining from the side impact sled test based on multiple movement reproduction and the result of the real side impact test. The results of the dummy’s injury showed that the side impact sled test method could well reproduce the interaction between the door trim, the seat and the dummy. The new method can be easily implemented in engineering and can satisfy engineering application.