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How to define cgap(g) elements for nodes to surfaces contact?

Hi all,

When I defined cgap(g) elements between two parts, I got a error message 'Failed to create gaps at 126 nodes. Try changing search tolerance'. However, the search tolerance had been set large enough I think, and the error message still existed even though I set a larger search tolerance.

I don't know why this happen. Could anyone help? The attachment is my model.

ErrorMessage.JPG.8f9277829fcfa4b9f417604fec4b8f1c.JPG

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

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Altair Forum User

Hi @Roy Duan

Thank you for sharing the file. I am looking into this issue.

Meanwhile as a workaround, use Connectors>> Spot>> Gap to create gap elements.

Altair Forum User

Hi @Roy Duan

Thank you for sharing the file. I am looking into this issue.

Meanwhile as a workaround, use Connectors>> Spot>> Gap to create gap elements.

Hi Prakash,

I'm looking forward to your good idea. Thank you.

Roy

Altair Forum User

Anyone can help? I can not solve the problem.

Thank you in advance.

Roy

Altair Forum User

Hi Roy Duan,

Looks like there is a problem with node to elements CGAP creation, Please use Connectors>>Spot>>Change the weld type to GAP and create welds. This creates GAP elements and at the end delete the connectors retaining the FE (GAP elements)

Altair Forum User

Hi Roy Duan,

Looks like there is a problem with node to elements CGAP creation, Please use Connectors>>Spot>>Change the weld type to GAP and create welds. This creates GAP elements and at the end delete the connectors retaining the FE (GAP elements)

Hi Prakash,

Could you give a detail information? I cannot find the Connectors>>Spot as you said. In addition, could you get a reasonable result by using the method you mentioned?

Thank you

Roy

Altair Forum User

Hi Roy,

Please check this video

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