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Patran Community Forum Modeling of Bolts

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Modeling of Bolts

ron.kunz over 7 years ago

Dear all,

I have a big assembly and want to model bolts in the complete assembly. What is the best and accurate way to model this.

Cbar analysis is accurate enough to analyse the bolt forces. Boltstress is of secundair interest.

Are there examples for these bolts?

In addition bar orientation for this CBAR property, how can this best be modeled?

Thanks in advance

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0 ron.kunz over 7 years ago

Thanks Vivek,

-This method I also know from Hypermesh/Nastran combination.

With Patran my predecessor has patched this hole and let Patran create a center node. So no RBE2 are created. Is there a difference in output results with this kind of modeling and the way you describe with RBE2?

-In addition:

Does the direction of the Y and Z matter (so negative or positive value) ?

-In addition:

If one has 3 plates connected to eachother how is the procedure?

-In addition:

For Hypermesh one CBAR is created between two nodes. In Patran I notice 2 elements between the different connecting points. If one wants to read out the boltforces what is the best approach?

Thanks.
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0 ron.kunz over 7 years ago

Thanks Vivek,

-This method I also know from Hypermesh/Nastran combination.

With Patran my predecessor has patched this hole and let Patran create a center node. So no RBE2 are created. Is there a difference in output results with this kind of modeling and the way you describe with RBE2?

-In addition:

Does the direction of the Y and Z matter (so negative or positive value) ?

-In addition:

If one has 3 plates connected to eachother how is the procedure?

-In addition:

For Hypermesh one CBAR is created between two nodes. In Patran I notice 2 elements between the different connecting points. If one wants to read out the boltforces what is the best approach?

Thanks.
Cancel
Vote Up 0 Vote Down

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