Global ETD Search
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Showing 1 to 4 of 4 for “"Vibration Pattern"”.
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Noise transmission path identification in a reciprocating freon compressor
… modal and finite element model analysis. The vibration pattern appears to be a combination of rigid-body motion of the compressor shell in response to the orbiting spring forces and a circumferential acoustic mode inside the shell. The sound intensity pattern radiated by a regular version of …
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Fluid-structural interaction effects on vibrations of pipework.
… the natural frequency, the damping ratio and the vibration patterns. To appraise the effect of the fluid on the natural frequencies, fluid-pipe interactions are formulated with extensions from single phase flows to two phase annular flows. The equivalence of the annular flow to the single phase is …
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System Identification and Optimization Methodologies for Active Structural Acoustic Control of Aircraft Cabin Noise
… technique for examining the forced harmonic vibrations of an aircraft fuselage and isolating the acoustically well-coupled motions that cause significant interior noise. The developed system identification technique is itself based upon an active control system, which is used to approximate …
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Vibration Analysis of a Wind Turbine Multi-Stage Planetary Gearbox Incorporating a Flexible Body Component
… solver. The model is created to show the vibration patterns of a healthy gearbox with rigid bodies, with a flexible body, and with a defect applied on a particular gear in the planetary gear systems that is representative of the N90 wind turbine. The flexible body incorporation allows for …