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Design World explores where wire-rope isolators work best

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Published on Feb 8, 2017

It’s expensive to keep equipment perfectly balanced, and it’s often inefficient to add structural reinforcements. But adding wire-rope isolators is a cost-effective way to address vibration — and when done upfront, it can save machine structures from fatigue. In this video, editors Lisa Eitel and Mary Gannon explore the designs of several wire-rope isolators from ITT Enidine and where they make the most sense.
Wire-rope isolator selection is a three-step process. As the Design World editors explain in more detail, first the designer defines the system into which the isolator is going — by supported load, number of isolators to support the load, and whether the application will see just compression or rolling. Then the engineer defines the excitation and natural system frequencies and calculates maximum isolator stiffness. The final step (before contacting the manufacturer) is to ensure the isolator will protect against shock loads. Values here depend on allowable transmitted acceleration, maximum isolator stiffness, response deflection, and allowable deflection.

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