making new elements to model after applying gravity loads

dvafaie · Post by **dvafaie** » Fri Jul 10, 2009 5:10 am

Dear Dr Silvia
I want to retrofitt a frame but I dont know how can add new elements after applying gravity loads.

Post by **fmk** » Fri Jul 10, 2009 11:02 am

just add elements in the regular manner .. do an analysis step with no additional loads to check the elements you are using using the deformed shape as the starting point, i.e. there forces should be zero or thereabouts.

dvafaie · Post by **dvafaie** » Sun Jul 26, 2009 7:43 am

it means at first I make my initial frame and do an analysis step with gravity load, after that add new nodes and elements (braces)?

Post by **fmk** » Mon Jul 27, 2009 2:24 pm

no .. just add the elements to existing nodes, do an analysis step with no additional loads just to check the new elements have 0 forces.