10-04-2017, 09:17 PM
ELECTRONIC shock absorber
INTRODUCTION
Shock absorbers must absorb or dissipation of energy. One design Consideration, when choosing a shock absorber or design, where the energy will go. Most inductors, energy is converted to heat inside the viscous fluid. In hydraulic cylinders, hydraulic fluid will heat up, while in the pneumatic cylinder, the hot air is usually exhausted into the atmosphere. In other types of reactors, for example, electromagnetic energy dissipation and use MAY BE a party.
DESCRIPTION
Pneumatic and hydraulic shock absorbers commonly take the form of a cylinder with a valve inside. The cylinder is filled with a fluid (such as air or hydraulic fluid). This piston/cylinder filled with liquid Combination is the Dash can.
applications
Shock absorbers are an important part of automobile and motorcycle suspensions, aircraft landing gear, and the supports for many industrial machines. Large shock absorbers have also been used in construction equipment to reduce susceptibility to damage the structure of earthquakes and resonance
car suspension
In the vehicle, reducing the effect of Travel on rough terrain, which leads to a better quality drive. Without shock absorbers, the car would have a bouncing ride as the energy stored in the spring and then released to the vehicle may exceed the allowable range of motion of the suspension. Control excessive suspension movement Required No more shock absorption (faster) sources that will give a tough ride Tower. Shock absorbers allow the use of soft (low speed) the spring controlling the speed of movement of the suspension in response to strikes. In addition, they, along with hysteresis in the tyres, the unsprung mass movement wet up and down on the springiness of the tyre. Because the tire is soft, like a spring, The effective wheel bounce damping may require more hard hitting than the ideal is for the vehicle alone.
Spring-based shock absorbers commonly use coil springs or leaf springs, though torsion bars can be used in torsional shocks as well. Ideal springs alone, however, does not shock absorbers as Springs only store and do not absorb or dissipate energy. Transport usually springs or torsion bars in both State as well as hydraulic shock absorbers. In this combination, "shock absorber" is reserved specifically for hydraulic piston absorbs and dissipates vibration.
construction
Such as in relation to the building structure or it can be part of Bridge Seismic Retrofit or as part of the new, earthquake-resistant construction. In this application, it allows restrains motion and absorbs resonant energy that can cause excessive movement and ultimately the failure of the structure.
TYPES of shock absorbers
There are several of the most commonly used approaches for depreciation:
Hysteresis (hysteresis, as memory of the material, if you push the rubber disks, they cant get back to your normal uncompressed as pressure relief) of the construction material, such as rubber disk compression, elongation of elastic bands and wires, Flexible steel springs, or twisting of torsion bars. Hysteresis is the tendency for other elastic materials to rebound with less force than is required for the strain they have. Simple means without any separate shock absorbers are damped, to some extent, on the hysteresis of their springs and frames.
dry friction as used in wheel brakes with disc (classic leather) on the axis of the lever with friction forced by springs. Used in the early cars such as the Ford Model T, through British cars 1940 's some. Although now considered obsolete, the year of the advantage of this system is the mechanical simplicity of the STI; the degree of damping can be easily by tightening or loosening the clamping screw Adjusted and it can easily be repaired with simple hand tools.ANedostatkom is that the braking force, not to increase tensions with the speed of vertical movement.
Solid, tapered chain shock absorbers, using one or more tapered, coaxial (s) of granular spheres, usually made of metals such as nitinol, in a casing. [1], [2]
Fluid friction, for example the flow of fluid through a narrow orifice (Hydraulics), constitute the vast majority of automotive shock absorbers.AnPreimu estvo of this type that use a special internal valving the absorber may be relatively mild compression (which allows a soft impact reaction) and relatively hard to extend, control of "shake", which is the answer on energy stored in the spring; Similarly, a number of valves controlled by springs can change the severity of The impact velocity and rebound.