Rayleigh's damping model has been used to evaluate the damping matrix, C=aM+ BK, for a fixed-fixed bar, split in 3 elements, and subject to axial vibration. M and K are the mass and stiffness matrices respectively. Please select all the answers that apply: The coupled equations of motion can now be decoupled into single mode equations. The damping is stiffness dominated when ß is large. Following observations through experimental testing, a=ß in most cases. We will obtain large damping at high frequencies only if a large. Following observations through experimental testing, ß is always null.

Rayleigh's damping model has been used to evaluate the damping matrix, C=aM+ BK, for a fixed-fixed bar, split in 3 elements, and subject to axial vibration. M and K are the mass and stiffness matrices respectively. Please select all the answers that apply: The coupled equations of motion can now be decoupled into single mode equations. The damping is stiffness dominated when ß is large. Following observations through experimental testing, a=ß in most cases. We will obtain large damping at high frequencies only if a large. Following observations through experimental testing, ß is always null.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Free Damped Vibrations

Free vibration is a type of vibration in which the external force is removed after giving the initial displacement to a body/system. In other words, in this type of vibration, force is applied at the initial displacement of the system, and after the initial displacement, force is removed, and the system vibrates at the natural frequency.

Question

Rayleigh's damping model has been used to evaluate the damping matrix, C=aM+ 3K, for a fixed-fixed bar, split in 3 elements, and subject to axial vibration. M and K are
the mass and stiffness matrices respectively. Please select all the answers that apply:
The coupled equations of motion can now be decoupled into single mode equations.
The damping is stiffness dominated when ß is large.
Following observations through experimental testing, a=ß in most cases.
We will obtain large damping at high frequencies only if a is large.
Following observations through experimental testing, ß is always null.

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