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A shock absorber or damper is a mechanical or hydraulic device designed to absorb and damp shock impulses. It does this by converting the kinetic energy of the shock into another form of energy (typically heat) which is then dissipated. Most shock absorbers are a form of dashpot (a damper which resists motion via viscous friction).
Football helmets bear the logo of the team and the team colors. By the mid-1980s, the football helmet had become a complex, highly engineered piece of equipment. The inside of the helmets was lined with foam padding and plastic pods, or an inflatable layer designed to absorb the shock of impact and create as tight as fit as possible.
The material combines some of the properties of rubber, silicone, and other elastic polymers. It is considered to be a good vibration damping material, an acoustic insulator, and highly durable. An unusually high amount of the energy from an object dropped onto Sorbothane is absorbed.
Without bump-stops, a vehicle that "bottoms out", will experience a very hard shock when the suspension contacts the bottom of the frame or body, which is transferred to the occupants and every connector and weld on the vehicle. Factory vehicles often come with plain rubber "nubs" to absorb the worst of the forces, and insulate the shock.
According to Engineering360, by 2019, the oleo-pneumatic strut had become the most common type of shock absorber in use on modern aircraft. [4] The oleo strut has seen much use on the largest cargo airplanes in the world, such as the Antonov An-124 Ruslan ; it reportedly provides for a rough-field landing capacity while carrying payloads of up ...
It is designed to absorb shock by crushing and deforming, and to dampen vibration, rather than transmitting the shock and vibration to the protected item. Depending on the specific situation, package cushioning is often between 50 and 75 mm (2 and 3 in) thick.