Shape Optimization of the moulds

[Anonymous]

Hello, 

I am trying to make optimization of the cavity during injection moulding of the plastic under positive pressure unsuccessful unfortunately I am attache the log file form my trials and cad version of the mould. Is it possible to make simulation of the wall thickness and gradient of the temperature during injection mounding condition?

Kind regards,

Vertor

[henderh]

Hi @Anonymous,

Thank you for posting.  I can get a successful solve if I tweak your study setup.

There's an additional body that is the symmetrical half of the cavity that is made invisible, but invisibility doesn't prevent it from participating in the simulation solve.  It needs to be removed in order for it to be excluded in the calculations, which can be done in the Simplify workspace.

Next, we're getting the solve error that the target mass cannot be achieved (the default 30% is being used) and 54% is the minimum.  I suspect this is due to the many faces that are selected for the fixed constraint.  All faces of the body that do not have a load applied to them are fixed.
In the Shape Optimization settings, there is an option to preserve entities that have a load or constraint.  With a 30% target mass specified, we're asking the solver to remove 70% of the material.  With the preserve entities option checked with all faces in the model having a load or constraint, I suspect the solver is struggling to honor these competing directives.
If we deselect the parting plane face from the Fixed constraint targets, and change the mesh settings to a smaller size of 3% we can get a successful result.  I had to increase the target mass from 30% to 33%.

In order to simulate the temperature gradient, you'll need to create a thermal (or thermal stress) study to have temperature results.  You'll need to use the Promote command in Simulation to export a mesh model of the Shape Optimization result, then convert it to a BRep (solid body) in order to use it in a Simulation.

Hope this helps!  (apologies for the late reply)
Best regards,

[raalteh]

Hi Vertor,

I'm one of the Product managers for Moldflow, injection Molding simulation. Moldflow is not yet part of the Fusion stack that's integrated into Fusion. For the detailed thermal performance of the mold and the effects on the molded part, there is a lot you can do within the Moldflow Insight product, but you may not have access to this.

Also, something you may want to give a try is new Die Casting constraints in Generative design that is currently in Preview mode Though I'm not suggesting you to Die cast the mold, you would have some thickness constraints (min and max.) of the geometry that would be created. It may not be perfect, but ... something to think about and try. 

I'm actually very curious to see what it is you are attempting and why. Unless I misunderstand, it would be something unorthodox, which would be interesting. Would it be possible to connect somehow?

Best regards,

Hanno van Raalte