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Taming hydraulic shock and vibration
Hydraulic systems are noted for being highly responsive even when moving heavy loads. But the dynamic behavior that can give unmatched motion control sometimes produces nasty consequences -- namely shock, vibration, and noise. Many industrial and mobile machines experience severe mechanical and hydr...
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| Published in: | Machine Design 2011-03, Vol.83 (4), p.58-61 |
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| Format: | Magazinearticle |
| Language: | English |
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| container_title | Machine Design |
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| creator | McGehee, Bryan |
| description | Hydraulic systems are noted for being highly responsive even when moving heavy loads. But the dynamic behavior that can give unmatched motion control sometimes produces nasty consequences -- namely shock, vibration, and noise. Many industrial and mobile machines experience severe mechanical and hydraulic shocks when a moving part -- such as the bucket on a front-end loader -- stops suddenly. Designs that let a cylinder bottom out but rely on relief, vent, or compensator valves that do not respond quickly enough will also generate hydraulic shocks. Design engineers often prefer hydraulic piston pumps, due to their compact size and high-pressure capability. However, these positive-displacement pumps generate pulsations -- similar to a continuous sine wave -- as the pistons stroke. Like shock waves, these pressure waves can induce vibrations detrimental to system components. Given the complex and unpredictable interactions between components, trying to estimate in advance a hydraulic power unit's noise level is nearly impossible. |
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Designs that let a cylinder bottom out but rely on relief, vent, or compensator valves that do not respond quickly enough will also generate hydraulic shocks. Design engineers often prefer hydraulic piston pumps, due to their compact size and high-pressure capability. However, these positive-displacement pumps generate pulsations -- similar to a continuous sine wave -- as the pistons stroke. Like shock waves, these pressure waves can induce vibrations detrimental to system components. Given the complex and unpredictable interactions between components, trying to estimate in advance a hydraulic power unit's noise level is nearly impossible.</description><subject>Bladder</subject><subject>Cylinders</subject><subject>Design</subject><subject>Design engineering</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Guidelines</subject><subject>Hydraulic equipment</subject><subject>Hydraulic shock</subject><subject>Hydraulics</subject><subject>Noise control</subject><subject>Plumbing</subject><subject>Shock waves</subject><subject>Sine 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| fulltext | fulltext |
| identifier | ISSN: 0024-9114 |
| ispartof | Machine Design, 2011-03, Vol.83 (4), p.58-61 |
| issn | 0024-9114 1944-9577 |
| language | eng |
| recordid | cdi_proquest_reports_857253892 |
| source | ABI/INFORM global; EBSCOHost: Business Source Ultimate; Alma/SFX Local Collection |
| subjects | Bladder Cylinders Design Design engineering Fluid dynamics Fluid flow Guidelines Hydraulic equipment Hydraulic shock Hydraulics Noise control Plumbing Shock waves Sine waves Vibration |
| title | Taming hydraulic shock and vibration |
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