Mass Matrix Of Structure

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AryanRZRD
Posts: 18
Joined: Sat Sep 14, 2013 2:42 am
Location: Tehran Polytechnic (AmirKabir University Of Technology ), Tehran, Iran

Mass Matrix Of Structure

Post by AryanRZRD »

i want OpenSees to give me the Mass Matrix of the structure in Global Coordinate System.
can anyone help me ?
regards
Aryan Rezaie Rad
Teaching Assistant & M.Sc Civil Earthquake Engineering Graduate Student
Amirkabir University of technology (Tehran Polytechnic)
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fmk
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Re: Mass Matrix Of Structure

Post by fmk »

you cannot obtain it directly, you could use the printA command to get the matrix for a static case and then a transient case with no damping .. and by some simple math obtain the M matrix knosing the integration factors applied to K and M for the transient case and time step.
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