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Alessandro

Issue importing optistruct model with PLYDRP constraint

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Dear Community,

 

I have a problem when creating an Optistruct model for freesize optimization including a ply drop-off (PLYDRP) constraint.

In particular, I created such a model in Hypermesh 2017 with different design variables (DSIZE). If I export the model in Optistruct format (.fem) and I import it again in Hypermesh 2017, I am not anymore able to see all the DSIZEs but I can see only one of it.

 

I have created a simple model to give you an example.

In the file attached, you will find (among the others) four DSIZEs: top, bottom, left, and right. The PLYDRP constraint is activate for all of these design variables.

If I export the model to an Optistruct input file (.fem) and I import it again in Hypermesh, I cannot see anymore the four DSIZEs, but only one of them (top) is still there.

This happens only if PLYDRP is activated.

 

I would really appreciate if anybody could give me an explanation about this strange behaviour and what to do to avoid it.

 

Thank you in advance,

Alessandro

plydrop_issue.hm

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Guest

Hi,

 

Thank you for sharing the file. I will check and update to you soon. 

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Guest

Hi,

 

I am able to reproduce the same issue in 2017 but works fine in HW 14.0. 

 

I wrote to Dev team regarding the same. 

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