Hi Xu, I usually see this warning, when I am using the FTIRE property file.
While solving the manoeuvre, the ADAMS solver shares data with COSIN Solver (CTI). CTI then solves Tire related data and communicates with the ADAMS SOlver an answer for further solving. This is a looping process. If the CTI finds that the expected answer differs from what the ADAMS Solver sends back, this warning is given.
You can reduce the time step to see if this warning goes away, or change the solver setting to SI2 for more accurate solving.
the message in most cases means that the combined system composed of the Adams model and FTire got numerically unstable. One of the typical reasons for this is an unrealistically small moment of inertia of the rim. What is this value in your case? In case you do not succeed, please contact support@cosin.eu after observing our support checklist.
I also got same warnings messages. I notice that these messages do not appear when running on flat road. But if the simulation is carried out on durability test tracks such as potholes, these warning messages appear. I am using Ftire and running full vehicle truck model in ADAMS/Car.
please see my reply above; the same holds in your case. Have you made sure the step size of your Adams solver is restricted to a meaningful value for durability simulations, say something like 1 ms?
In case you do not succeed, please contact support@cosin.eu after observing our support checklist.
