Sometimes they serve as mounts for a concrete block, which provides further isolation. Mechanical springs and spring-dampers These are heavy-duty isolators used for building systems and industry. The air container can interfere with isolation of low-amplitude vibration. Air systems may leak under vacuum conditions. These tables provide enough isolation for laboratory instrument under some conditions. Air tables consist of a working surface or optical surface mounted on air legs. Some pneumatic isolators can attain low resonant frequencies and are used for isolating large industrial equipment. Air springs are rubber bladders which provide damping as well as isolation and are used in large trucks. A source of compressed air is required to maintain them. A few of these applications are for industrial equipment such as pumps, motors, HVAC systems, or washing machines isolation of civil engineering structures from earthquakes (base isolation), sensitive laboratory equipment, valuable statuary, and high-end audio.Ī basic understanding of how passive isolation works, the more common types of passive isolators, and the main factors that influence the selection of passive isolators:Ĭommon passive isolation systems Pneumatic or air isolators These are bladders or canisters of compressed air. Passive vibration isolation is a vast subject, since there are many types of passive vibration isolators used for many different applications. "Passive vibration isolation" refers to vibration isolation or mitigation of vibrations by passive techniques such as rubber pads or mechanical springs, as opposed to "active vibration isolation" or "electronic force cancellation" employing electric power, sensors, actuators, and control systems. 1.5.1 Branch pipe a of isolating vibration.
1.5 Vibration isolation of unsupporting joint.1.4 Vibration isolation of supporting joint.1.3.3 Six-degree-of-freedom (six-DOF) isolation.
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