Mode-Shapes

[engAnthony]

Hi!!!

Anyone know how to obtain the normalized mode-shape matrix from SAP2000?

Thanks in advance

 

[271828]

I think you can get that by displaying tables, joint displacements, and selecting the modal analysis case. I seem to remember them being normalized so that
[PHI]'*[M]*[PHI]= but I'm not sure. I'd create a 2 or 3 DOF simple model and test that assumption if I needed to know that.