Crumple zone

Road Maintenance Truck Impact Attenuator, Auckland New Zealand.

Range shown in blue of East Japan Railways (JR East) E217 series train. The driver's cabin is a crushable / crumple zone).

The crumple zone on the front of these cars absorbed the impact of an offset head-on collision.

The crumple zone is a structural feature mainly used in automobiles and recently incorporated into railcars.

Crumple zones are designed to absorb the energy from the impact during a traffic collision by controlled deformation. This energy is much greater than is commonly realized. A 2,000 kg (4,409 lb) car travelling at 60 km/h (37 mph) (16.7 m/s), before crashing into a thick concrete wall, is subject to the same impact force as a front-down drop from a height of 14.2 m (47 ft) crashing on to a solid concrete surface. Increasing that speed by 50% to 90 km/h (56 mph) (25 m/s) compares to a fall from 32 m (105 ft) - an increase of 125%. This is because the stored kinetic energy (E) is given by E = (1/2) mass × speed squared. It increases by the square of the impact velocity.

单词	Crush belt
释义	Crush belt 英语百科 Crumple zone The crumple zone is a structural feature mainly used in automobiles and recently incorporated into railcars. Crumple zones are designed to absorb the energy from the impact during a traffic collision by controlled deformation. This energy is much greater than is commonly realized. A 2,000 kg (4,409 lb) car travelling at 60 km/h (37 mph) (16.7 m/s), before crashing into a thick concrete wall, is subject to the same impact force as a front-down drop from a height of 14.2 m (47 ft) crashing on to a solid concrete surface. Increasing that speed by 50% to 90 km/h (56 mph) (25 m/s) compares to a fall from 32 m (105 ft) - an increase of 125%. This is because the stored kinetic energy (E) is given by E = (1/2) mass × speed squared. It increases by the square of the impact velocity.
随便看	correcting signal correcting SQUINTING correcting stem correcting table correcting table for correcting tables of selective printers correcting the frequency response correcting timing errors correcting unit correcting value correcting variable correcting voltage correcting wedge correcting weight correcting wheel correcting wire correct invoice mass Correctio correctiohn copy correction correction action correction action system correction advice correction agitator correctional Correctional center

Crush belt

Crumple zone