Steel plate thickness may not be safe The key to advanced structure
In fact, almost all auto makers are not talking about the thickness of steel plates when they are promoting the safety of their products. They are emphasizing the structure and emphasizing 3H body and collision energy absorption technology. Whether it is a German car or an American car or a Japanese car, in fact, when the speed reaches 50 kilometers, a 1.5-ton vehicle body collides with a collision, and the plate thickness difference of 0.1 mm does not work at all, and the plane impact resistance has almost no effect on safety.
So what determines the safety factor of the vehicle? Is the structure. It is the skeleton of the vehicle with progressive energy absorption and anti-deformation capabilities that determines the safety performance. The safety design and architectural design of the car body are similar: ancient buildings such as the walls of the Forbidden City are very thick, but its seismic strength is definitely not comparable to that of a modern frame structure, although modern buildings are very tall and often Glass material. In the moment of a collision, the energy absorption at the front of the car body is the most important, because only as much energy is absorbed as possible to ensure that the cab is not deformed, thus protecting the occupants.
For example, the current 3H high-steel body in the industry, the structure has a layer of ribs on the side and top of the body, so that it has the local steel plate thickness, plastic deformation effect, absorption impact force and passenger cabin hardness indicators are available Obvious security advantages. Another important safety design in the body structure is the subbody structure under the front cabin, which has excellent energy absorption effects for frontal and side impacts.
The body is heavy but dangerous The scientific modeling is safe
Some people think that the body is heavier and safer at high speeds. This is another misunderstanding. The development of car-making technology has been to this day, and the body weight has long been not a show of safety. The real guarantee of high-speed stability depends on the shape of the vehicle.
For example: The aircraft's weight is quite large, but it can rise. This is because of the rational application of aerodynamics, which is achieved through modeling. The function of the two wings is to pull the fuselage up. The principle of the vehicle's modeling stability is the opposite: its structure determines the faster the car will open at high speeds, the greater the pressure of the air on the car body, and the higher the car's safety. For example, the rear wing, its function is not beautiful, its role is to increase the air downforce to the body, and to ensure a more stable body. The heavier the car body will cause the braking distance to lengthen, which is an unstable factor instead. And the more heavy the car is, the more fuel it consumes will increase the additional cost of use.
In fact, it is very easy to build a car and it is difficult to build a car. Including the current aluminum alloy steel engine developed by major manufacturers, as much as possible to thin the steel plate, all efforts are made to make the car lighter in order to improve the vehicle's acceleration performance; and more importantly, the car light also makes the brakes When the inertia is reduced, the braking distance is shortened to ensure the safety of the vehicle.
From this point of view, the thickness of the steel plate and the weight of the car body are already the erroneous concepts of vehicle safety. The majority of consumers must walk out of their mistakes and polish their eyes when purchasing a car, paying attention to the structure and technological content of the vehicle. Because safety comes from technology, the structure guarantees safety.
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