Browse Prior Art Database

Rotational Vibration Suppressor

IP.com Disclosure Number: IPCOM000122078D
Original Publication Date: 1991-Oct-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 1 page(s) / 43K

Publishing Venue

IBM

Related People

Boigenzahn, JF: AUTHOR [+4]

Abstract

Disclosed is a device which suppresses the rotary vibration of a rotary actuator disk file without degrading the file's overall shock and vibration performance.

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This is the abbreviated version, containing approximately 100% of the total text.

Rotational Vibration Suppressor

      Disclosed is a device which suppresses the rotary vibration of
a rotary actuator disk file without degrading the file's overall
shock and vibration performance.

      The rotational resonances of the rotary actuator disk file can
be significantly modified by creating an attachment between the
bottom of a base casting 1 and a user mounting frame 3.  This
attachment is achieved by using the rotational vibration suppressor 2
(see the figure).  The rotational vibration suppressor is made of a
thin sheet of flexible material (plastic, metal, etc.) with an
adhesive backing.

      The rotational vibration suppressor 2 reduces the amount of
rotation the file can experience (relative to the user frame) by
using the in-plane rotational stiffness characteristics of the
material.  The out-of-plane flexibility of the suppressor allows the
existing shockmount system to function essentially unchanged in the
Z-axis of the file allowing for maximum protection of the head-disk
interface.  The X-axis of the file is not significantly changed due
to the buckling characteristics of the suppressor and the Y-axis
isolation characteristics remain intact since the device simply
suppresses the rotational components of the resonance shape (leaving
only the translational component).

      Disclosed anonymously.