topic Re: Simulation Refinement in Fusion Design, Validate & Document Forum

Simulation Refinement

MichaelT_123 — Thu, 03 Nov 2016 02:07:26 GMT

Could you please consider adding an option of refining the last (or previous) valid simulation by adjusting the mesher/solver parameters?

The successive simulation would use already calculated results as a starting base, allowing for better, smoother, shorter design verification process.

With Regards

MichaelT

Re: Simulation Refinement

ahreum.ryu — Thu, 03 Nov 2016 06:36:45 GMT

Hi @MichaelT_123,

Thank you for sharing your idea.

I understand that you want to add an option that having setting values obtained through the succeeded previous study. it's like a library??

You just mentioned about the option of refining, does it mean by mesh??

However whenever we modify model, we need to create a new mesh again along with model. because the node and element will be fitted the model in order to calculate.
I guess that environment (materials, constraints, load etc.) will be possible to add as option. but regarding mesh, I'm not sure it would be hard.

I also used to few analysis tools and some of analysis software provide the option but it is also exception in case of mesh.

If I miss something please let me know

Many thanks,

Re: Simulation Refinement

Pavel_Holecek — Thu, 03 Nov 2016 08:02:41 GMT

Hello Michael,

in current version is possible to use Adaptive Mesh Refinement , you can find it in Simulation Setting dialog.

After Solve you can see Convergence plot in Results Toolbar area

let me know if you need more information.

Regards

Re: Simulation Refinement

jan.vonasek — Thu, 03 Nov 2016 08:24:33 GMT

Hi @MichaelT_123,

Thanks for your input.

When we want to reach reproducible results we cannot start from old results and iterate to new results. It would lead to different result for every next solve. Currently we have no plans to change it.

A little different situation is with mesh. For example when old mesh is still valid and only results need re-solve it is not necessary recomputed also mesh. We have these improvements in mind for future improvements.

If you are looking for mesh refinements there is available Adaptive Mesh Refinement command yet. Additionally in next build will be available Local Mesh Control command for manually added limits for meshing of selected faces or edges.

Regards,

Jan

Re: Simulation Refinement

MichaelT_123 — Fri, 04 Nov 2016 00:18:34 GMT

Yes Pavel,

I am aware of this option, ....

I am thinking about something along similar lines .... but not automatic ....

Let's allow the designer to take a meaningful decision/action how the refining be made.

For example a few possible options:

1.) increase granularity of the mesh by x%

2.) focus on this particular area/component and make mesh denser there

3.) isolate some particular component and using boundary conditions from the current valid simulation continue detailed simulation of it

4.) Use boundary conditions in certain area to start a new simulation of separate component/assembly not included in the current one but "connected by the design".

The boundary conditions in the new simulation would be translated to force, contact pressure, torque etc.

5.) display the "error" tensors (similar to displacements)

With Regards

MichaelT

Re: Simulation Refinement

MichaelT_123 — Fri, 04 Nov 2016 00:41:49 GMT

Hi Ahreum Ryu and the other Team Members,

So far you are doing good job!

The product although is based on Autodesk foundation is still new, but it seems to evolve quite dynamically in good direction.

The basic intuition of building such a software ( I mean simulation system) is to divide it into the mesher, the solver and the analysis ....

... the analogy here would be a dough, an oven and a cookie jar.

In both situation the result will depend on designer and the kitchen chef, won't it? ... as much as on an "infrastructure".

So please, give a designer as much input possibilities as possible.

With Regards

MichaelT