Drop-off Constraint
Altair EmployeeHi,
I am running a composite optimization with Optistruct and I need to comply with a manufacturing rule of drop-off : when the total thickness of the laminate increases then the thickness of each orientation must not decrease.
Is it possible to set up this rule ?
Thanks,
Ludov
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Altair EmployeeHi Prakash,
I believe that the ply drop off constraint PLYDRP is not useful to set up my manufacturing rule.
The picture below is an example of what I want to avoid in my optimization : the total thickness of the laminate increases while the thickness of the 45° ply decreases.
I have a limited knowledge about response constraints. Is it possible to set up my rule with DRESP, equations ... ?
<?xml version="1.0" encoding="UTF-8"?>
Altair EmployeeHi Ludov,
Sorry for a late reply.
Do you have any balance constraint on your laminate for +45/-45 plies?
if not, can you introduce this and check if you are able to get the desired?
Altair Employee Yes, I have a balance constraint for +45/-45 plies.
My previous reply was an example that can be used with any plies.
By default the total thickness of the laminate can increase while the thickness of a 0° ply or 90° ply decreases. I don't believe that the constraint is implemented in Optistruct. Maybe if I use responses and equations it could be.
Hi Ludov,
Do you want to introduce drop off as a response constraint?
You can have ply drop off constraint for laminate composites on DISZE card.