The car rear door bumper
The car side collision rod material is Shanghai Baosteel BR1500HS manufacturing, BR1500HS steel tensile strength can reach m
The side door anti-collision beam (bar), also called door beams (bar), the English Side Impact Beam, Door Beam, refers to the internal structure of the door with the beam (from the outside and see), to strengthen the structure of the sides of the vehicle, and then improve the side impact collision resistance. In order to improve the security side.
According to the survey, in all car collision mode, side collision accounted for about 1/3. Therefore, how to protect the driver in the side impact safety is very important. As an additional door collision energy absorbing protection, can reduce the occupant may suffer from external forces. In fact, in the collision of the vehicle door anti-collision beam fixed objects (such as trees) protection effect is very obvious.
Door anti-collision beam shape: generally divided into tubular and cap two; South Korea car used tubular door beams (usually at both ends for connecting and fixing bracket, and the door anti-collision beam, while Europe and the United States used Doors cap anticollision beam (usually directly welded on the door); tube shaped anticollision beam is mainly is the round tube, rectangular tube, plum shaped tube, oval tube etc. of course, it must consider many factors, such as the internal space; and cap anticollision beam are mainly single cap shape (U shape) and double cap shape (M shape).
Layout of door anti-collision beam: the most common is the diagonal arrangement, there are vertically arranged.
The main energy absorption effect and the following factors related to door beams:
1, structural design; this is a point, the most important general, cap anticollision beam energy absorbing effect than tubular anticollision beam; in addition, the double cap structure than single cap structure is better; of course, there is a hat shaped structure, height, and A/B/C column, car threshold matching all. Important;
2, the strength of the material; people usually thought that the inside of the pipe is ordinary water pipes and tubes, in fact; the tensile strength with Japan and South Korea in the car up to 1400-1600MPA (some of the current domestic brand car is relatively common, ordinary pipe pipe) is the strength of more than 4 times, the energy absorption effect is common the 2 times more common in Europe and the United States; and the cap tensile strength reached 1400MPA the general anticollision beam;
3, the thickness of the material; of course is thicker materials, energy absorbing effect is better (not considering and A/B/C column, car threshold matching), energy absorption effect and the thickness of the material is directly proportional.
