Article ID Journal Published Year Pages File Type
803697 Mechanics Research Communications 2008 8 Pages PDF
Abstract

A common approximation in the analysis of non-classically damped systems is to ignore the off-diagonal elements of the modal damping matrix. This procedure is termed the decoupling approximation. Contrary to widely accepted beliefs, it is shown numerically that over a finite range, errors due to the decoupling approximation can continuously increase at any specified rate while the modal damping matrix becomes more and more diagonal.

Related Topics
Physical Sciences and Engineering Engineering Mechanical Engineering
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