Parts pass trought eachother 2

[Hoebels]

Hi,

I have a problem with my ABAQUS model. I want to model a Hertz contact, i have a 3D quarter of a Disk and a rigid surface and apply a displacement on the top of the disk. Everytime i run my model my disk goes right through my rigid surface except for the initial contact point.

My BC's are a ristriction for front of the disk in Z-direction, and the side and top are restricted in both z and x. The y direction is the direction of the displacement.

I have defined a contactpair between the part of the disk that can come into contact with the rigid body.

Any tips on how to prevent the disk from going through the rigid body?

http://files.engineering.com/getfil...a-eef5-4cae-9b8e-4cccdded2b3b&file=Result.JPG

http://files.engineering.com/getfil...-818c-4a8d-8ca3-da08d960076f&file=initial.JPG

 

[vandergram]

Hello,

I think that you just need to define your deformation scale factor to 1. to do so, go to options, common then set the deformation scale factor to 1. this will allow you to visualize the "real" deformation of your parts.

 

[corus]

With the mesh you've got you'll only get point contact and any other distortion has been scaled up to make it appear as if it passes through the rigid surface. The distortion, however, is made worse by the hour glassing in the elements. Change the element type to get rid of it. Why you're using a 3D mesh is a mystery when the problem seems to be 2D. You should be using plane stress elements for a disc, or plane strain elements if the model is to represent a long cylinder. Also refine the mesh considerably at the point of contact to have any meaningful results.

 

[Hoebels]

Thanks a lot for the feedback, the problem was indeed for a large part because of the auto-scaling of the deformation. Now on to fix the mesh.