[CIG-SHORT] generate topographic surface in cubit/trelis

[Brad Aagaard]

Kang,

I have not encountered the problem you describe, but I have not made 
many meshes with topography. Depending in your scale, you may have 
nearly coincident points or CUBIT/Trelis thinks they are coincident due 
to tolerance issues.

We recommend only including topography at a scale that is relevant to 
your objective. If your discretization size to resolve the deformation 
is on the order of 5 km, then the spatial resolution of your topography 
should probably be of similar scale. If the elevation is not on the 
order of 1 km, then your model is probably not sensitive to topography 
and you might as well use a flat ground surface.

Regards,
Brad

On 05/26/2016 11:29 AM, Kang Wang wrote:
> Hi Brad,
>
> I am trying to use Cubit/Trelis to generate a topographic surface
> with 'create surface net U curve  V curve’, where curves are created
> with ’create curve spline’ from regularly spaced points . However, it
> always fails with error message ”wire has self-intersection" if the
> intervals of the points are small. The way to get it work is to have
> larger intervals. I wonder if you have met this problem before?  Do
> you know if this error was in the step creating spline curves or in
> the last step of creating net surface?
>
> Thank you very much, Kang Wang
>
>