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Problem bolting multiple parts

Pedro Almeida

Hi,

I'm having some problems with connecting multiple parts.

So in my design, I have 5 parts that are joined by one long bolt. The parts I've already meshed using CTETRAs but I don't know how should do the bolt, since 1D rigids cannot be used to connect to multiple components.

Thanks

Pedro

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HyperMesh

v2019

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Viraj_Kulkarni

Pedro,

If you have multiple parts with a hole and then have a long bolt, you can do that using 1d connectors.

Example:

Say if you have 3 components with hole

Go to 1d-->connectors-->bolt

Choose bolt(cbar)configuration. Enter correct tolerance. Choose a node on inside face of the hole.

Then you can get a Rigid-Cbar-Rigid-Cbar-Rigid connector

Hope this helps

Pedro Almeida

Hi Viraj,

Thanks for the reply. I tried what you said but it's giving an error and not realizing the connector.

It's saying: '2 holes are required. Check diameter limits and tolerance or too close neighbor bolts'

I already tried to do it with only 2 of the parts and it also did not work. I've also tried to set the tolerance a bit bigger but also didn't work.

Do you know what am I doing wrong?

Thanks

Pedro

Viraj_Kulkarni

Hi Viraj,

Thanks for the reply. I tried what you said but it's giving an error and not realizing the connector.

It's saying: '2 holes are required. Check diameter limits and tolerance or too close neighbor bolts'

I already tried to do it with only 2 of the parts and it also did not work. I've also tried to set the tolerance a bit bigger but also didn't work.

Do you know what am I doing wrong?

Thanks

Pedro

Mostly the mistake happens at tolerance level, try making sure you have enough tolerance to capture both holes- try increasing it. Can you share your model/image of the multiple holes.

I think you should get it with this connector panel. Worst case-you can create rbe spider for every hole individually and connect each center to another with a cbar/cbeam. The connector helps you do this automated.

Pedro Almeida

Mostly the mistake happens at tolerance level, try making sure you have enough tolerance to capture both holes- try increasing it. Can you share your model/image of the multiple holes.

I think you should get it with this connector panel. Worst case-you can create rbe spider for every hole individually and connect each center to another with a cbar/cbeam. The connector helps you do this automated.

thanks a lot, my bolt is 10.6mm in diameter and I already tried tolerances from 5 to 25mm but couldn't make it happen. But I'll make it manually, creating the spider and connecting with a CBEAN/CBAR.

Between those what would be the difference?

Thanks,

Pedro

Viraj_Kulkarni

Hi

thanks a lot, my bolt is 10.6mm in diameter and I already tried tolerances from 5 to 25mm but couldn't make it happen. But I'll make it manually, creating the spider and connecting with a CBEAN/CBAR.

Between those what would be the difference?

Thanks,

Pedro

Just to note for tolerance: whichever node you select for creating bolt--all nodes from that node should be within the tolerance. So make sure you do some quick F4 checks and assign suitable value.

Additionally, you can check for more settings for realizing the bolt.

Click realize and hole detect details:

and make sure max dimension is greater than your hole diameter.