Friction coefficient doesn't seem irrelevant for the TIED pressure-overclosure

[ANYS]

Hi,

According to the manual :

“For the TIED pressure-overclosure relation only two parameters are used: the
spring stiffness K (> 0, required), and the stick slope λ (> 0, optional). The
friction coefficient is irrelevant”.

I added a FRICTION card to input the stick slope λ but is also asking me for a value grater than 0 for the friction coefficient. ¿?

Regards

[FEAnalyst]

CalculiX won’t let you set 0 friction coefficient even for tied contact:

*ERROR reading *FRICTION: friction coefficient
must be strictly positive
*ERROR reading *FRICTION. Card image:
0

So you have to set some positive value even though it’s irrelevant for the solver.

[ANYS]

Thank you very much.