VIBRATION ANALYSIS OF CENTRIFUGAL BLOWER IMPELLER FOR VARIOUS MATERIALS USING FEA

Abstract

It is important to recognize that the design of any machine is an interdisciplinary process, involving aerodynamics, thermodynamics, fluid dynamics, stress analysis, vibration analysis, the selection of materials, and the requirements for manufacturing. The operation of any mechanical system will always produce some vibration. Our goal is to minimize the effect of these vibrations, because while it is undesirable, vibration is unavoidable. The result of excess vibration can vary from nuisance disturbance to a catastrophic failure. All fans must generate some vibration. They continuously rotate and since nothing is perfect, cyclic forces must be generated. It's only when vibration reaches a certain amplitude that we call it bad. Vibration may just be an indicator of some problem with a mechanism, or it may be a cause of other problems. Finally, vibration can transmit into adjacent areas and interfere with precision processes, or create an annoyance for people. Hence the objective of this study is to present vibration analysis of centrifugal blower for materials such as steel, aluminium and composite (glass/epoxy).