How to smooth an optimized mesh?

[OnlineFEASolver]

I have written a script that does load path analysis by removing elements that are not in the load path. I would like to improve the visual appearance of the optimized mesh. Any suggestions for either creating a smooth cad geometry from the mesh or modifying the mesh to make it smoother and less jagged? Here is a picture that shows a simple sphere with a point load at the top and supported at three points at the base:

Principal -

http://www.OnlineFEASolver.com

General FEA Consulting Services

 

[GregLocock]

I've used Optistruct which ends up with the same problem. In the end I just exported the surface as an STP file and drew an appropriate structure over the top.

The process you'd like to use is called annealing, but the practical difficulties associated with implementing it are hard - as you move nodes the element quality drops.



Cheers

Greg Locock

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.

 

[OnlineFEASolver]

Thanks, Ill check into annealing. However I am not concerned with element quality as I just want something pretty to capture.

Principal -

http://www.OnlineFEASolver.com

General FEA Consulting Services

 

[meshparts]

Hi,

Also search for the "MARCHING CUBES" algorithm. It's relatively easy to implement and computes a smooth surface from the relative densities of the elements.

Regards,
Alex

 

[meshparts]

The "MARCHING CUBES" algorithm works for hexahedral meshes. But if you understand how it works, you should be able to write your own code for tetrahedral meshes.