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Simple Fix for an experienced Ansys Static Structural user

Simple Fix for an experienced Ansys Static Structural user

Simple Fix for an experienced Ansys Static Structural user

Hi Engineers!
I am currently having a problem where I have a structure using multiple 1D Beam elements loaded with a force. The problem I am having is that when the beams are deforming they do not have collision between them and are intersecting with one another. Is there a way I can fix this and create collision between the elements so they will not pass through each other as this will help the accuracy of my simulation drastically.
Kind Regards,
I have attached a photo of my problem, any help would be greatly appreciated.

RE: Simple Fix for an experienced Ansys Static Structural user

You have to define contact between those beams, otherwise their collision won’t be detected. Ansys, like other advanced FEA programs, has contact elements that can be used to model contact of beams.

RE: Simple Fix for an experienced Ansys Static Structural user

Thank you for your response! I have tried to search for this but still do not know how I would do this. Do you have any idea how I could define the contact?
I am using SpaceClaim and then importing into Ansys Mechanical

RE: Simple Fix for an experienced Ansys Static Structural user

You would need to manually define the contact by selecting the contact/target surfaces, and applying the contact behavior etc. You may need to refine the load time steeping to detect the contact. With that being said something may be incorrect with the model or design. The model may be improperly constrained allowing for excess deformation. How do your deflections compare to hand calculations? Are your reactions consistent with what you would expect to see? If your results are meeting the expectation of your hand calculations there may be issues with the design itself. The image looks like some sort of truss structure deflection in the members should be low enough that the beam should not intersect or rub. If they do you no longer have a truss. I would look to add additional gap between members to avoid this behavior altogether.

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