How to set the Friction Model in Contact.

liumao1981

帮朋友问个问题,以下是他的问题,请帮忙解答一下,中英文均可,谢谢!
Hi there,
Hope everything going well.

I have one question: Anyone knows how to choose the friction model in ANSYS/ LS-DYNA?

When we define the surface to surface contact, there are spaces for us to input some coefficient such as the static friction coefficient, kinetic friction coefficient, decay...

If I wanna use the Coulomb's Law of friction and input only the kinetic friction coefficient, (by this i mean the friction coefficient is constant, and is equal to kinetic friction coefficient),  how to set that? 'Cause im afraid that if i just only input the kinetic friction coefficient without defining the Law of friction, Ansys may consider other coefficients (static & decay..) have zero value, and also use this equation ?c = FD+(FS-FD) e-DC(vrel) to calculate the overall friction coefficient. So the friction coefficient is not constant, and is not equal to kinetic friction coeffient.  

Any one can explain for me?
Thank you so much
Regards