Nj mills in polymer foams handbook 2007. The video tells the importance of crumple zones in car and its effects.
While some have it in front only.
Car crumple zone. In 1967 the mercedes heckflosse was the first production car in the world with crumple zone safety features including a safety cage with crumple zones and a trunk that had been made almost 50 bigger. External parts of cars and other road vehic useful english dictionary. Some cars have these sections on either sides front and at rear also.
During a frontal impact the seat cushion shears because the seat belts do not restrain body motion until their slack is taken up. The crumple zone also known as the crash zone is the area in a car where the energy of the impact is absorbed and reduced thus preventing it from being transmitted to the occupants and keeping passengers safe during accident. And how do crumple zones come into play in collisions.
The lower cross member strikes the oncoming cars protective structure activating its crumple zone as intended so the occupants can be given the maximum level of protection low speed impact absorption. Auto safety has come a long way in the last few decades and one of the most effective innovations is the crumple zonealso known as a crush zone crumple zones are areas of a vehicle that are designed to deform and crumple in a collisionthis absorbs some of the energy of the impact preventing it from being transmitted to the occupants. Surrounding those parts with crumple zones allows the less rigid materials to take the initial impact.
But what exactly is a crumple zone. The front and rear crumple zones of a car are designed to collapse at a force which transmits a 20 g horizontal deceleration to the rigid passenger cage. As in parking bumps to prevent permanent damage to the vehicle.
The crumple zone on the front of these vehicles absorbed the collision impact. Like seatbelts and airbags crumple zones are one of many vehicle safety features designed to help protect you and your passengers if youre involved in an accident on the road. Crumple zone uk us noun countable singular crumple zone plural crumple zones the part of a car that is designed to crumple in a crash so that the passengers are protected from the force of the crash thesaurus.
The front of the bumper is designed to withstand low speed collisions eg. The car begins decelerating as soon as the crumple zone starts crumpling extending the deceleration over a few extra tenths of a second. In the video below engineer james earle explains how future cars using 3d printing will incorporate crumple zone cad technology.
Crumple zones also help redistribute the force of impact.