PAC2002 local Tire Solver for faster simulations.

The PAC2002 tire model has differential equations to solve. By default, those states are solved by the Adams Solver via the General State Equation (GSE) as part of the Standard Tire Interface (STI). A fast local tire solver can take care of calculating these states instead without the use of the GSE. To activate the High Performance mode of the PAC2002 tire in Adams Car, right-click on the wheel, select Modify and set High Performance to 'yes' as shown below (repeat this step for each set of wheels).

An example of the improved runtime while running the realtime demo vehicle model in SimWB utilizing 4 threads is shown below (green = High Performance tires, yellow = without High Performance tires).

It should be noted that the Adams Solver step size may not be too large for using the local tire Solver. The advised maximum step size (HMAX) is 0.005s.

If you do not have a PAC2002 tire property file, note that you can use the Adams Tire Data and Fitting Tool (TDFT) to compute a PAC2002 tire property file out of tire measurement data or perform an automatic conversion of non-PAC2002 Adams Tire model tire property files towards a PAC2002 tire property file.

For more information about the Tire Data and Fitting Tool see Adams Tire Data and Fitting Tool (TDFT).