fan_correct

fan_correct - ME 563 Mechanical Vibrations, in-class...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
ME 563 Mechanical Vibrations, in-class example problem 2010 DEA MODELING THE WOBBLE OF AN ELECTRIC FAN Assumptions: - The fan motor is ‘ideal’ in the sense that the applied torque does not depend on the wobbling motion of the fan - All of the damping in the support and fan bearing is viscous in nature - The stiffness of the support in the vertical direction is large relative to that in the horizontal direction, so the wobbling motion in the vertical direction can be ignored - All of the motion of interest takes place in the plane (no wobbling in and out of the page) - The support can be represented by a set of lumped effective mass, damping and stiffness parameters even though it is a continuous element - The support stiffness does not permit the fan housing itself to rotate; the only rotation of interest occurs in the fan blades - The rotation of the fan in counterclockwise - The forces due to the aerodynamics of the fan blades themselves are negligible at the low speeds of interest
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

fan_correct - ME 563 Mechanical Vibrations, in-class...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online