Thank you so much sir Mike for your too much important answer.
You have recommended to me to check the maximum friction stress (TAUMAX) value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. I need to ask you sir what is the formula should be used to calculate the TAUMAX value that i should input in the contact settings?
According to the ANSYS manual:
” The program provides one extension of classical Coulomb friction: real constant TAUMAX is maximum contact friction with units of stress. This maximum contact friction stress can be introduced so that, regardless of the magnitude of normal contact pressure, sliding will occur if the friction stress reaches this value. You typically use TAUMAX when the contact pressure becomes very large (such as in bulk metal forming processes). TAUMAX defaults to 1.0e20. Empirical data is often the best source for TAUMAX. Its value may be close to the yield stress of the material being deformed devided by squar(3)”.
In the case of my simulation the yield stress of the steel is 489MPA so i defined TAUMAX as follow: RMODIF,3,9,282.324281633727e6. This value is yield stress divided by squar (3). Is this correct sir?
I’m really confused about its value please guid me.
Thank you so much sir,
Best regards
Hajar
You are navigating away from the AIS Discovery experience