Model
Digital Document
Publisher
Florida Atlantic University
Description
Modal analysis testing techniques were used to determine
the modal parameters and mode shapes for flexural vibration of a
Fiberizer Discmill disc to help define a safe operating speed range.
The modal parameters and mode shapes were determined for the
first six diametral modes, the first concentric mode, and the first
rigid body shaft mode. The disc consisted of a circular aluminum
plate with eight equally and symmetrically spaced radial cutters on
one face of the disc and eight equally spaced peripheral cutters
located on the rim of the disc midway between the angular locations
of the radial cutters. All cutters were of tool steel. The
safe area of operation is determined to be between 3000 rpm and
3600 rpm. The experimental setup and procedure Is described in
detail with particular emphasis on validation of assumptions
required for the analytical approaches used in calculating the modal
data.
the modal parameters and mode shapes for flexural vibration of a
Fiberizer Discmill disc to help define a safe operating speed range.
The modal parameters and mode shapes were determined for the
first six diametral modes, the first concentric mode, and the first
rigid body shaft mode. The disc consisted of a circular aluminum
plate with eight equally and symmetrically spaced radial cutters on
one face of the disc and eight equally spaced peripheral cutters
located on the rim of the disc midway between the angular locations
of the radial cutters. All cutters were of tool steel. The
safe area of operation is determined to be between 3000 rpm and
3600 rpm. The experimental setup and procedure Is described in
detail with particular emphasis on validation of assumptions
required for the analytical approaches used in calculating the modal
data.
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