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Pattern repetition using optistruct

Hello,

I am currently working on a model, demanding topology optimization and patterns repetition. I am done with topology optimization of one cell but facing some problem working with pattern repetition. I get error saying *** ERROR # 729 *** Any design property can only be referenced by one DTPL or DSIZE card. multi-referenced property id = 1. I have attached file for optimization of unit cell and image of expected results after pattern repetition.

Please respond if anyone has even a slightest of idea.

Thanks in advance.

<?xml version="1.0" encoding="UTF-8"?>

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Altair Forum User

Hi @Swapy

I used the file which you attached for and I didn't get any error message at my end.

Altair Forum User

Thanks for replying Prakash /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

How can I do pattern repetition if I wish to have 3 models repeated in single row as shown in attached images?<?xml version="1.0" encoding="UTF-8"?> similar results in row?

Altair Forum User

@Swapy

For pattern repetition you need a master and slave(s) components. So one a single property it is not possible to get a similar pattern.

Possible Workaround: Divide the component into different properties (3 in your case), define 3 DTPL setups and assign pattern repetition constraint on these properties.

Give the above a try and check if you get results as expected.

Altair Forum User

Thanks Prakash

I will try doing that.

I will come back with results.