round shapes lost using "Split Face"
round shapes lost using "Split Face"
(OP)
Hello,
i am doing an FEM investigation and try to mesh a complex geometry with NX. I'm frequently using the function "Split Face" to generate a better mesh. This is working perfectly on plane shapes, but on round edges the geometry gets changed! The generated spline, which divides the faces, is shown with low tesselation.
PROBLEM: The faces shape is not round anymore, but fitted to the low tessellated spline. This shape problem is also carried over to generated meshes on this face.
I am searching for something like how to crank up the tesselation from the mentioned spline. I dont want to change the faces from the polynominal structure and try to solve the problem with the "split face" command inside the simulation application.
Someone is able to help?
Regards
David
Vers: Siemens NX 8.0
i am doing an FEM investigation and try to mesh a complex geometry with NX. I'm frequently using the function "Split Face" to generate a better mesh. This is working perfectly on plane shapes, but on round edges the geometry gets changed! The generated spline, which divides the faces, is shown with low tesselation.
PROBLEM: The faces shape is not round anymore, but fitted to the low tessellated spline. This shape problem is also carried over to generated meshes on this face.
I am searching for something like how to crank up the tesselation from the mentioned spline. I dont want to change the faces from the polynominal structure and try to solve the problem with the "split face" command inside the simulation application.
Someone is able to help?
Regards
David
Vers: Siemens NX 8.0





RE: round shapes lost using "Split Face"
Can you show an example image of what / how it is you do with this split face ?
Regards,
Tomas
RE: round shapes lost using "Split Face"
RE: round shapes lost using "Split Face"
Increasing the mesh density doesnt fix the problem, Thomas. The bad shape is just meshed with a finer mesh. I'm very sorry i can't upload an example showing the problem due high restrictions concerning the geometries.
petulf, please give me a hint where i can find this option.
Regards
RE: round shapes lost using "Split Face"
www.nxjournaling.com
RE: round shapes lost using "Split Face"
Regards
RE: round shapes lost using "Split Face"
www.nxjournaling.com
RE: round shapes lost using "Split Face"
Regards,
Tomas
RE: round shapes lost using "Split Face"
But its problematic to correct a face with this method after meshing. A properly working "Split Face" command in the FEM file is still my aim.
I even have no internet connection at the CAE-Workstation. I cant show an visualization from my problem, sorry.
RE: round shapes lost using "Split Face"
www.nxjournaling.com
RE: round shapes lost using "Split Face"
petulfs hint (2nd post) sounds great, but i dont know where to "turn on high resolution polygen models".
Regards
David
RE: round shapes lost using "Split Face"
David: The setting is available through Preferences->Meshing...-> High Resolution Polygon Bodies For more information check out NX help -> Home -> CAE -> Advanced Simulation -> Command reference -> Meshing Preferences dialog box.
RE: round shapes lost using "Split Face"
I have to say this does not fix the lines, which are created with the split face command in the fem model. maybe a bug?
Im doing face splitting in the idealized model with subdivide face command now, which works pretty well, but not perfect at all. Till now. The high resolution polygen model option merged this and furthermore all random appearing problems with elements not following the bodys shape (spikes appeared at plane surfaces, edges were meshed with bad shaped meshes). Im happy my models have finally the quality, which i request.