Shock Response for Equipment Response to Impulsive Loads

Shock Response for Equipment Response to Impulsive Loads Shock response is important for understanding equipment’s response to impulsive loads. An impulsive load can be anything from a mechanical impulse to a water hammer, travelling across road bumps or drops, shock pulses, and explosions. Equipment response includes a variety of systems, e.g. electric cabinets, satellites,  motors, generators, coolers, piping, cardboard boxes containing goods, and sensor response. Shock response results can be confusing, as they show response versus resonance frequency. We need to elaborate a bit on the...

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Slugging Pulsating Pressure Source Characteristic & Measurement

Multiphase Slugging Pulsating Pressure Source Characteristic & Measurement   Slugging in multiphase flows can be caused by a variety of factors (see here and here ), including from pigging operations, operational conditions, where low flow velocity cause mixtures to separate (terrain-induced slugging), or low points where liquids at sufficiently high flow flood the low point cross section and cause periodic slugging (also known as riser slugging), as seen in Figure 1. Periodic slugging can be detrimental to piping fatigue, as it causes large pressure pulsations in the system. Currently,...

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Piping Vibration Physical Mechanisms

The root cause for piping vibration can be one or many of the following: Mechanically-induced vibration Fluctuating Line Pressure (LP) Flow-induced by variations in Kinetic Pressure (KP) Pulsation-driven, i.e. excited by propagating waves in the pipe system Figure 1. Pressure, Line Pressure, Pulsation and %LP. %LP matters for the generation of shock waves from wave steepening, a topic treated elsewhere in this Learn More section. (Click on figure to expand) Mechanically-induced vibration tends to be the largest near a machine or perhaps, externally-induced vibration transmitted e.g. via a...

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