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Optistruct modeling of the separation line in head-to-head conjuction of plies in composite material

Hi,

I'm trying to simulate the separation line between two plies of composite material which belongs to two different molds. I suppose that there is a weak point in this separation line and I want to simulate it. I adopted the PCOMPP property using interface laminate and sublaminate in order to simulate either global plies either plies which have head-to-head conjuction.

I compared the results obtained in the model that has the separated plies (right model in the attach) with the results obtained in a model with full plies (left model in the attach) but the results are identical.

Is it possible to simulate the separation of the plies in the head-to-head conjuction?

I had already tried several combination of PCOMPP, PCOMP and PCOMPG without success.

Thank you in advance for your help.

2provini.png

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GTT Johan

Hi Campo

How do you model the separation line between the molds?
Do you use 2 component which refer to 2 different props and material?

If the prop and material are the same you will not see any difference since they are same but just origanized in 2 comps!

Do you want to investigate separation as function of time?

/johan

Campo

Hi Johan,

Thank you for your reply. I actually don't completely understand it. I used to different properties but the same material for the two sides of the sample. I also tried to use different components, properties and materials (which same values) and the results don't show difference. I tried either approaches ply-based and zone-based.

Do I wrong interpretate your reply?

What I try to do is to obtain a laminate where some plies are interrupted at the mold sepration and 0 (or very low) stress pass through between two sides. I think that only the global plies which laies on both sides should be able to trasmit the stress between to sides. Am I wrong?

I think it could be a technogical issue and I would like to simulate it.

thanks.

Alessio