I have a question regarding the value you choose for the contact stiffness in your simulation.
By comparing my results obtained with ccx to ansys, I have found, that in order to get similar results to ansys I need to increase the contact stiffness settings to quite high values - at least compared to the recommendation of the manual (5 to 50 times young’s modulus).
Using values this low and analyzing the contacts, I see that my contacts in ccx are way too soft and that the elements penetrate each other much more than in ansys.
Is there a better way to estimate the contact stiffness needed than the rule of thumb of the manual?
It seems a bit impractical to run many simulations after each other and to tune these contact values for each model.
edit: I am comparing a 2D case, not sure if this matters
Thank you for your insights