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Extracting of the state space matrices
Posted 15 lug 2016, 11:42 GMT-4 Acoustics & Vibrations, LiveLink for MATLAB Version 4.4 0 Replies
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I am trying to export the state space matrices of a model which I have built in COMSOL using Acoustic module. The problem is when I extract {A} and {B} matrices, I face the singular matrices but the {MA} and {MB} are evaluated without any problem.
As I have read in Livelink user guide {MA} and {MB} are eliminated mass matrix. The thing is since I have studied energy engineering my background is not that much good in vibration and dynamics, so I couldn't understand what would be the usage of {MA} and {MB} matrices in the dynamic analysis of a system. I have tried to find some relevant information in literature but couldn't find any proper explanation regarding the application of {MA} and {MB} matrices in dynamic analysis of the systems.
I would be very thankful if someone gives me some hints regarding what is the difference in term of usage between {MA} and {A} matrices.
Kind regards,
Shahin Mohammadnejad
Hello shahin mohammadnejad
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