Learning Forum

[dlooman]

For the NLGEOM question - within a static analysis, typically the setup will include HI=0 sectors.  If only HI=0 sectors are used, all non-linearities are allowed (NLGEOM, NL Materials, NL Contacts within a stage).  When higher order HI’s are included, to recombine the solutions we are using linear superposition so nonlinearities get blocked.  We are investigating whether we can recombine solutions of multiple HI sectors when nonlinearities are present but there isn’t a timetable yet for when or if this might be allowed.

 

For the temperature question, Im not sure what the issue might be without seeing the model.  We have run a lot of test case models with applied thermal loads (directly applied temps, temps imported from external data sources, temps imported from multistage thermal analyses). One potential thing that could be causing issues is if you are importing temperatures from external sources, you need to have an individual applied temperature object in the tree for each stage, even if the source is from the same data file.  For example here is a generic gas turbine model which has a 2D thermal analysis result for the entire assembly:

 

You can see that there are 7 unique imported body temperature objects even though they all come from the same source result file.  Each of the imported body temperature objects are scoped to just the bodies for that stage.  This model has 7 stages and each has its own temperature object in the tree.