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Analysing stepped lap joint

Altair Forum User

Halle everyone,,

I hope someone can help me with alysing a stepped joint.

I am currently trying to analyze this lap joint. But I believe that i am doing something wrong

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

I have created the lap joint as one laminate with 32 different plies. But i get the exact same results when I analyze this settup as when i do an analyze of a plate without an joint.

these are the result. left without a joint and right with the joint

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

Do i need to create sublaminates with an interface or is there something else?

kind regards,

Thomas Wirtz

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Altair Forum User

Hi Thomas,

Could you please share both model files?

Please use the file transfer link in my signature to share the model file

Altair Forum User

Hello

I have send u my files

I keep getting Error 608 too..

kind regards

Altair Forum User

Thank you for sharing the files.

I will check and update you soon.

Altair Forum User

Hi,

I've gone through the model and I see some elements are referenced in both the laminates which should write out an error.

Are you using the same model which you shared?

Altair Forum User

Hallo,

Read the comment i made

Altair Forum User

Hi,

I missed your comment,

So the error is with the element used in different laminates. I will update you soon on this.

Altair Forum User

I have updated the file.

I will share that file with you soon,

Altair Forum User

Hello,

Thank you for the updated version. It helped me a lot. But now i ran into a different problem. I have been asked to simulate the same stepped joint with the same overlap length. but now with a gap at each step. The gap is filled with matrix. The same matrix used for the laminetes. So it should look a bit like this.

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

I have created a model like this. But i can not get the interfaces correct. I keep getting Error 640

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

I hope you are able to give me some tips.

Thank you for your time

Kind regards

Unable to find an attachment - read this blog

Altair Forum User

Hi,

I will look into this and will get back to you soon.

Altair Forum User

Hi Thomas,

The interface is not well designed and I see more than 4 interfaces. Is that correct?

Altair Forum User

Hi,

@Prakash Pagadala That is kinda my question i think. Im not complete sure how many interfaces i need

Altair Forum User

Hi Thomas,

I was a bit confused with the layout. Anyways, I will check and update you soon on this.

Altair Forum User

@Prakash Pagadala I am sorry about teh confusing. Feel free to ask me for more information if its needed

Altair Forum User

@Prakash Pagadala i have tried to redesign the interfaces but i keep getting the same errors

Altair Forum User

Hi @thoom30

I am halfway done. I will share the file soon.

Altair Forum User

@Prakash Pagadala Thank u for your time