Hi
any one tried 3D mesh in third party software and imported into moldflow?
could not able to launch the analysis with the mesh from 3rd party software; after remeshing only i could able to launch the analysis.
do we require to remesh it in Moldflow again? refer the attached image
Thanks
M P Pradeep Kumar
Solved! Go to Solution.
Solved by xusho. Go to Solution.
Solved by harald_goetz. Go to Solution.
Have a look at this presentation (video and / or PDF)
http://au.autodesk.com/au-online/classes-on-demand/class-catalog/2014/moldflow-insight/sm5706-p
You'll find out that every external 3D mesh is "flagged" and needs to be remeshed (as you did and foudn out already).
Except: Hypermesh!
But you need to export the mesh as *.udm file.
I've never meshed with HM so far (but have access to it, - maybe I should try?).
There are some reasons to use an external mesher, but I usually export only the skin mesh to MF and remesh it to 3D.
There is a "Built your simulation IQ" series ongoing, which will have meshing as the topic, I guess it was planned for January 2015.
Stay tuned.
Harald
Hi
I will try to export as *.udm from HM
Thanks
M P Pradeep Kumar
Hi Pradeep / Harald,
I too tried the same, importing 3D mesh from Ansa to Moldflow unable to launch analysis.
Instead of re-meshing I created a tetra element in moldflow and changed the property by moving all the elements to that collector. It works.
Thanks
Aravind Halasur
Moldflow 3D solvers has 2 extra requirements:
1. No tetras have all nodes on surface.
2. No internal tetra edges with 2 nodes on surface.
In this image, we can see 2 tetras: ABCD and EFGH.
Tetra ABCD has 4 nodes on surface.
Tetra EFGH has edge GH, both node G and H are on surface.
With Moldflow 3D mesher, those tetras will not be created. But third party meshers may generate those types of tetras.
After import a 3D mesh from third party, we need to do a minor refinement to avoid those tetras.
When you see "Refine mesh" on stuty panel, just double click it, uncheck a checkbox: Use surface mesh matching.
Then Moldflow mesher will check the mesh for those 2 types of tetras.
If found, it will split tetras.
If not found, it will not change the mesh, but will add a flag to indicate this mesh is OK for analysis. Then "Refine mesh" will become "3D Mesh" and ticked. You will be able to run analysis.
Hello Shoudong Xu
we did tried with exporting the file as *.udm from third part software and imported as *.udm into Moldflow; Got thru "Refine mesh" flag...
While doing 3D mesh checking it showed the areas at edges are not having enough elements thru thickness... though we have 6 layers of elements in that region.
Now, i got the reason for it thru your reply... Thank you for your post
Thanks
M P Pradeep Kumar