Vibration analysis of undamped,suspended multi-beam absorber systems |
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Authors: | R T Faal M B Amiri A A Pirmohammadi A S Milani |
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Institution: | (1) Department of Mechanical and Industrial Engineering, 373 Snell Engineering Center Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA;; |
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Abstract: | The vibration analysis of an Euler-Bernoulli beam with an attached rotary unit is first carried out assuming no unbalance.
For comparison purposes, two different beam end boundary conditions are considered: a simply-supported and a clamped-clamped
condition. The problem is then extended to the vibration behavior of the initial beam when subjected to a harmonic load due
to an unbalance in the rotary unit. To absorb the ensuing vibrations, a secondary passive beam system is suspended from the
primary beam which consists of two continuous leaf springs and three discrete masses. The absorption frequency is obtained
by exploring the deflection norm of the primary beam versus dimensionless frequencies of the system. To ensure the appropriateness
of the procedure for similar multi-beam absorber systems, an experimental set-up is established and analytical results are
verified. |
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Keywords: | |
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