Based on conceptual design method,the experiment test and the simulation of the automobile\'s side frame components\' general intrusion velocity curve and B pillar deformation mode,three simplification intrusion velocity curves which loaded to the specific position of the B pillars were extracted,and then the B pillar/dummy simplification model was established.

By photographic method,we recorded the interface between sea water and fresh water and the horizontal and longitudinal development of sea water intrusion,which offered experimental data to the calculation of sea water intrusion speed.