CONTACT - cilndric hinge

Alessia

Hi everyone, 

I'de like to recreate a realistic cilndric hinge without 0D elems.
The exercise I'm attempting to do is down below. The hinge is on the left corner.

• I've created a contact surface

• I did set Clearance to 0 because of the gap between the red comp and the yellow one.

The PROBLEM is: the yellow comp doesn't slide on the red one. I wanted to permit a rotation on the z-axis but it's like they are stuck together. 

 

Could someone help me?
I'm attaching the HM file and the out one.

Thank you

Adriano A. Koga

Hi @Alessia 

 

For your case, you can do 2 ways, depending on your analysis type:

 

1) linear (static, modal, etc)

>> Use SLIDE contact option, and clearance 0.0 >> this will define a frictionless contact that allows sliding/rotation betweeen your contact pairs BUT as it is linear, doesn't consider any separation/closing.

 

2) non-linear (static, transient)

>> Use SLIDE or Static Friction >> this will allow your hinge to rotate AND it will allow you to consider contact closing/opening, leading to a different contatct distribution.

Adriano A. Koga

Hi @Alessia 

 

For your case, you can do 2 ways, depending on your analysis type:

 

1) linear (static, modal, etc)

>> Use SLIDE contact option, and clearance 0.0 >> this will define a frictionless contact that allows sliding/rotation betweeen your contact pairs BUT as it is linear, doesn't consider any separation/closing.

 

2) non-linear (static, transient)

>> Use SLIDE or Static Friction >> this will allow your hinge to rotate AND it will allow you to consider contact closing/opening, leading to a different contatct distribution.

PaulAltair

You will need to run 'LGDISP' to see the behavior you expect,

I modified your fem file, see attached

 

Alessia

Adriano A. Koga_21884 said:

Hi @Alessia 

 

For your case, you can do 2 ways, depending on your analysis type:

 

1) linear (static, modal, etc)

>> Use SLIDE contact option, and clearance 0.0 >> this will define a frictionless contact that allows sliding/rotation betweeen your contact pairs BUT as it is linear, doesn't consider any separation/closing.

 

2) non-linear (static, transient)

>> Use SLIDE or Static Friction >> this will allow your hinge to rotate AND it will allow you to consider contact closing/opening, leading to a different contatct distribution.

Thank you!

Alessia

Paul Sharp_21301 said:

You will need to run 'LGDISP' to see the behavior you expect,

I modified your fem file, see attached

 

Thank you!