i newly started my phd in structural health monitoring and need to understand some basic terms.
Stabilization diagram is a novel approach to identify the order of the system, but it may yield false modes.
If you want to describe a system with n modes, you need n equations to describe them. That is: n mass-spring-dashpot units, also given as «n degrees of freedom». However, such diagrams are prone to some overdetermination, and you get «more apparent modes» than those exisiting in the system.
Simpler systems, with low damping, are easier to determine correctly than more complex, with high modal densities and/or high damping.
Anders Buen i am sorry, i am at starting of my research work and trying to understand basic terms. can you explain systam order that i have mention in attached figure.
It would help if you show what you measure. I cant see any meaning to the y-axis on the right as a «system order». The height of the peaks is a measure of the modal mass and damping of your measured object.
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