Learning Forum

[mertnarinn]

https://www.youtube.com/watch?v=yUhTaTwM-c4&t=382s

[jonsoln]

Hi!
If you have a gap between the ball and plate the contact might not behave as expected. Try doing a initial contact status check (Connections -> Insert Contact Tool -> Generate Initial Contact Results) to see what the initial gap and penetration is.

[mertnarinn]

First of all, thank you for your advice. When I do what you say, I get the error "You have a contact tool with invalid contact selections or result requests". How can I solve it?

[jonsoln]

Did you add the contact to the list in the contact tool? The contact should show up in the list. The error could also be related to a contact tool under the solution branch.

[mertnarinn]

After adding it to the list in the communication tool, it gave the following result. What should I do to find a solution here? As in the video, I throw the ball from the air towards the ground with the initial velocity. I am using exactly the same inputs.

[jonsoln]

When the contact is open or far open, no contact elements are created and the ball will penetrate through the plate. You can try setting the pinball radius manually to a larger number. I don't know why the contact is far open, since the listed pinball is already greater than the gap and penetration.

The pinball determines how large the initial distance between the contact and target surfaces needs to be for the solver to ignore contact at that point.