How can I change friction coefficient in Abaqus for change in contact pressure, strain and sliding velocity? Does anybody experience with Vfric subroutine? I guess in Vfric it is possible to define a friction model as a function of slip rate and pressure only? How is it possible to define strain also?
Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
How can I change friction coefficie 1
- Thread starter dine_k03
- Start date
-
1
- #2
If you use Coulomb friction model you can set dependency of friction coefficient not only on the default variables (slip rate, pressure and temperature) but also some field variables:
*FRICTION, DEPENDENCIES=n
u, y, p, T, f
where: u - friction coefficient, y - slip rate, p - pressure, T - temperature, f - field variable.
Subroutines FRIC_COEF/VFRIC_COEF correspond to this model.
I think that you could use USDFLD (or VUSDFLD in Explicit) to relate this field variable to strain. However FRIC/VFRIC subroutine used when Coulomb model is not enough should also support the use of solution-dependent state variables.
*FRICTION, DEPENDENCIES=n
u, y, p, T, f
where: u - friction coefficient, y - slip rate, p - pressure, T - temperature, f - field variable.
Subroutines FRIC_COEF/VFRIC_COEF correspond to this model.
I think that you could use USDFLD (or VUSDFLD in Explicit) to relate this field variable to strain. However FRIC/VFRIC subroutine used when Coulomb model is not enough should also support the use of solution-dependent state variables.
- Thread starter
- #3
- Status
Similar threads
- Locked
- Question
- Locked
- Question
