Post-Processing RMOD-K Tire Plotting

Information on the tire behavior can be requested using requests and the REQSUB subroutine. Available information for the tire includes:

•	Tire states (speeds, rotations,etc.)

•	Tire performance information (rolling radius, etc.)

•	Tire forces in the SAE coordinate frame

•	Tire forces in the Tydex-W (wheel) coordinate frame

•	Tire forces in the Tydex-C (contact patch) coordinate frame

The plot data is stored in both the .abf file and the .plt file for post-processing. Plotting can be done in HyperGraph version 10.0 and later.

.abf File Post-processing

Requested tire data is saved as a REQSUB type in the .abf file. Select the specific tire data you are interested in and plot the request. Requests must be plotted individually and cannot be selected as a group. When plotting the .abf file, the component names are displayed and will show up on the plot as the line label names (see the examples below):

rmodk_post_processing_plotting_abf_file_ex1

Selecting tire data to plot from the .abf file

rmodk_post_processing_plotting_abf_file_ex2

Plot of tire data from an .abf file

.plt File Post-processing

Tire requests are reported in the .plt file as REQSUB entities. Requests and the column where they are stored in the data are shown in figure below:

Request	Description	X	Y	Z	RX	RY	RZ
1	Rolling States	Rolling Radius	Omega Actual
2	Tire Kinematics	Longitudinal Slip	Lateral Slip	Inclination Angle
3	Tire Forces in Ground Ref Frame	Longitudinal Force	Lateral Force	Normal Force	Overturning Moment	Rolling Resistance	Aligning Torque
6	Tire forces in Tydex C Ref Frame	Longitudinal Force	Lateral Force	Normal Force	Overturning Moment	Rolling Resistance	Aligning Torque
10	Tire Contact Patch Location	Tire X Contact Patch Location	Tire Y Contact Patch Location	Tire Z Contact Patch Location
15	Miscellaneous Data	Tire Model Enumerator	CPU Time

Request Data in a .plt file

rmodk_post_processing_plotting_plt_file_ex1

Tire Forces from a .plt file