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Object overlapped after structural simulation

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Old   October 7, 2022, 12:53
Exclamation Object overlapped after structural simulation
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Hello,

I want to simulate the movement of a shaft through a cylindrical shape. The shaft has spring support. It needs to push the spring and get through the cylinder. But when I applied the force of 68 N and fixed support beneath the body, the simulation completes and the shaft overlapped with the cylindrical body. It needs to just pass by. I'm presuming the shape of the spring tilting the shaft but I need to make it straight. Please help me with this.
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Old   October 11, 2022, 10:40
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Is it really overlapping, or is the deformation scale exaggerated which makes it look that way. Use True scale for deformation.
Do you have a contact set up between the two bodies (frictional, frictionless, bonded)? The program does not know about any contacts unless they are explicitly set. If everything is scaled correctly and the contacts are set correctly, try more load sub-steps to ramp the load more gradually or switch the contact/target faces. Also try a mesh refinement.
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Old   October 11, 2022, 10:49
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Thanks for your reply. I've tried with all the contact options available (frictional, frictional, no separation) but the result is the same. I'll try mesh refinement as per your suggestion. But I don't know about the true scale deformation. Where can I find it?
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Old   October 11, 2022, 10:51
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If you want I can send the model via email for your clear understanding.
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Old   October 19, 2022, 16:52
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The default deformationcale is never true scale, and usually exaggerated. You can change deformation scale from toolbars in mechanical. Display deformation result, then look at your toolbars at the top above your tree for: RESULT: [# Auto Scale], and change it to true scale.
Or look at the deformation values, and calculate if it is really going through the other geometry (is it larger than the original gap?)
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cylinder, mechanical apdl, shaft, spring, structural analysis

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