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Analysis of a bush (rubber/metal) subjected to radial displacement in Ansys

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Posts: 15
Topic starter
(@jax1588)
Active Member
Joined: 10 years ago

Try to eliminate all possibilities step by step. Try by using another mesh, see if it takes you further, I eliminate contacts by putting the bodies in same part. Try with another material model, Yeoh 3rd for example, see if it fails.

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Posts: 10
(@Clajer)
Active Member
Joined: 9 years ago

which rubber do you advise me to use? (NR? or sth else?)
can you tell me the coefficients of your model or experimental data?

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Posts: 10
(@Clajer)
Active Member
Joined: 9 years ago

which rubber do you advise me to use? (NR? or sth else?)

can you tell me the coefficients of your model or experimental data?

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Posts: 15
Topic starter
(@jax1588)
Active Member
Joined: 10 years ago

I make experimental testing for every rubber I use. The coefficients vary very much depending on the experimental testing. I can give you some coefficients but I dont know how it can be useful for you. Dont you have some experimental data? If you dont, Ansys has some elastomer sample in its library.

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Posts: 10
(@Clajer)
Active Member
Joined: 9 years ago

i really confused dear friend.
i spent 2 weeks on this problem and i cant solve it. i want to model press-fit process and detail is not important for me.
i want to get deformation form of rubber after press-fit

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Posts: 15
Topic starter
(@jax1588)
Active Member
Joined: 10 years ago

You got pm

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Posts: 3998
(@jorgen)
Member
Joined: 5 years ago

If your model predictions are not accurate enough then either your FE model is not setup right, or more likely, you are using an inappropriate material model. It requires some careful experiments and a suitable material model to get accurate results. Can you perform more experiments on your rubber?

-Jorgen

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