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Ritz Vectors in Linear Modal Time History

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ludvik

ludvik

Structural
Joined
Aug 6, 2001
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I have a linear FNA (modal integration) time history in SAP2000, and I am trying to define the starting ritz vectors.

I have some damping elements at my foundations which model the foundation stiffness and damping.

Do i need to give starting ritz vectors for these damping elements, or are the X, Y, and Z acceleration vectors sufficient?

Michael Ludvik
 
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