Research on Lightweight Carbon Fiber Roof of a Blade Electric Vehicle

The static collapse model of carbon fiber composite material and steel roof of a domestic blade electric vehicle was established respectively through the finite element software--Hyperworks. The relationship between the pressure of the pressure plate and the collapse depth of the roof was calculated by using the ls-dyna solver. The results show that the carbon fiber composite has better protection to passengers than the steel roof, and has achieved obvious lightweight effect. In order to obtain the optimal protective layer method for the occupant, the static crushing simulation comparison was carried out on the composite roof of four classical layer methods [0/45/-45/90]2s, [0/90/45/- 45]2s, [45/45/0/90]2s and [45/45 /90/0]2s, the results showed that the [45/-45/90/0]2s method is superior to others as adopted in the layer mode.