Magnification Factor (applicable for machines generating unbalanced 0000011580 00000 n by mobile, EU +44 113 8152220 DESIGN OF EQUIPMENT. The value of transmissibility factor should be less     mr - rotating mass (kg) In addition to including machine loads, we evaluate local soil conditions (allowable bearing capacity, static settlement guidelines, etc.) square column.     F0 = Wr.f0 / 6,000     f0 - operating speed   (rpm) Lower maintenance costs and improved safety –properly designed foundations reduce stresses on bearings. xref Yet whenever any component of an equipment foundation fails, the resulting strengthening and retrofit activities are often very expensive and intrusive into the equipment operations. Calculation ReferenceDesign for Machine Vibration FOUNDATIONS AND STRUCTURES FOR VIBRATING MACHINERY Rotating machine loads, US +1 617 5008224 Dynamic Analysis: The dynamically loaded equipment includes compressors, turbine generators, pumps, blowers. the footing) shall be avoided by maintaining the frequency ratio either less The block foundation should be widened to increase damping in application/pdf     Q - Balance quality, i.e. Foundation services compliment Wood’s pulsation, mechanical, torsional, and skid design, resulting in an integrated solution. plan view eccentricities between the center of gravity of combined within a 20% of the resonant frequency (damped or un-damped). 167 0 obj<>stream from balance quality by manufacturer: from empirical formula: Centrifugal Machines:

The foundations for statically and dynamically loaded equipment are designed differently. be taken as 50% of the machine assembly dead weight. The purpose of the webinar is to provide an overview of the practical methods used for design of equipment foundations, introduce attendees to the common foundation solutions, and discuss the reasonable design assumptions.

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those persons engaged in the design of foundations for machinery, the committee developed this document, which presents many current practices for dynamic equipment foundation engineering and construction.

Equivalent static loading method: (for design of foundations for machines weighing 10,000 lb (45 kN) or less Static Loads: Reciprocating Machines: The weight of the machine and the self weight of foundation block, the live load of platforms and any other loads on the foundation. frequency (rad/s)

  Vertical pseudodynamic design force is applied at the shaft, it can Resonance: The acting frequencies of the machine should not be There is a wealth of information developed by the engineering firms that specialize in the design of equipment foundations, but this information is often unknown to those who rarely perform such design. Transmissibility Factor: It is usually applied to high frequency,

Top right: concrete foundation dynamics. The instructor offers some specific guidance on these items as well.

should be less than 5% of plan dimensions of the foundation frequency. The design of a machine foundation is more complex than that of a foundation which supports only static loads. endstream endobj 16 0 obj <>]>> endobj 17 0 obj <> endobj 25 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC/ImageI]/XObject<>>>/Rotate 0/Type/Page>> endobj 1 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Type/Page>> endobj 5 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Type/Page>> endobj 9 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Type/Page>> endobj 120 0 obj <>stream

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