Hi all dear
I have two issues
first
- how can i run a time history non linear dynamic analysis of a structure while i use the deformation of nonlinear static analysis of the same structure as an initial condition.
second
-is it possible to get the sequance of plastic hinges formulation. in structure while run nonlinear dynamic analysis like other softwarw ( like idark and etabs nonlinear )
thanx alot
two issues about non-linear dynamic analysis
Moderators: silvia, selimgunay, Moderators
1.
just issue a loadConst -time 0.0 command after the static analysis, create dynamic loads and then run the dynamic analys (Example3.3.tcl)
2. with the fiber based force and displacement beam columns there is no way of knowing when a 'plastic hinge forms', there is (and can be recorded .. ask for 'plasticRotation') a plastic hinge rotation (the permant chord rotation that is present should ele be released) .. when using most of the nonlinear materials, this is present from almost the start.
just issue a loadConst -time 0.0 command after the static analysis, create dynamic loads and then run the dynamic analys (Example3.3.tcl)
2. with the fiber based force and displacement beam columns there is no way of knowing when a 'plastic hinge forms', there is (and can be recorded .. ask for 'plasticRotation') a plastic hinge rotation (the permant chord rotation that is present should ele be released) .. when using most of the nonlinear materials, this is present from almost the start.