Cardinal Point
Cardinal Point
(OP)
When you choose a cardinal point that is not at the centroid of your section does SAP still apply the mass of the section to the centroid or at the selected cardinal point?
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RE: Cardinal Point
I think you should try it yourself.
Model a simple beam of known mass. Run to find frequency and mode shape, you can also display modal forces. then cardinal it, repeat. The difference if any should clear your doubts.
I bet the mass is shifted.