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* '''Horizontal Motion Isolation:'''
The beam-columns have horizontal stiffness Ks with the weight load applied laterally. Due to this the lateral bending stiffness is reduced by the "beam-column" effect. This behavior is equivalent to a horizontal spring combined with an NSI so that the horizontal stiffness is K=Ks-Kn, and Kn is the magnitude of the beam-column effect.
[[File:NSIHNSI2.png|frame|left|Image reproduced from [https://commons.wikimedia.org/wiki/File:Vibrations_damping.svg here]]][[File:NSI3.gif|frame|center|Image reproduced from [https://www.minusk.com/content/technology/how-it-works_passive_vibration_isolator.html here]]][[File:NSI4.gif|frame|left|Image reproduced from [https://www.minusk.com/content/technology/how-it-works_passive_vibration_isolator.html here]]][[File:NSI5.gif|frame|center|Image reproduced form [https://commons.wikimedia.org/wiki/File:Vibrations_damping.svg here]]]<br \>
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If you are done reading this page, you can go back to [[Transportation#Types of PVI Systems|Types of PVI Systems]]
== References ==
This page has been inspired from https://www.minusk.com/content/in-the-news/Cleanroom_Technology_0412.html