Shock (mechanics)

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In mechanics and physics, shock is a sudden and transient acceleration caused, for example, by impact, drop, kick, earthquake, or explosion. A mechanical shock typically consists of a short-duration, high-magnitude acceleration event that can cause structural deformation or failure in components. Shock describes matter subject to extreme rates of force with respect to time. Shock is a vector that has units of an acceleration (rate of change of velocity). The unit g (or g) represents multiples of the standard acceleration of gravity and is conventionally used. A shock pulse can be characterised by its peak acceleration, the duration, and the shape of the shock pulse (half sine, triangular, trapezoidal, etc.). The shock response spectrum is a method for further evaluating a mechanical shock. Shock measurement is of interest in several fields such as Shocks are usually measured by accelerometers but other transducers and high speed imaging are also used. A wide variety of laboratory instrumentation is available; stand-alone shock data loggers are also used. Field shocks are highly variable and often have very uneven shapes.