Rock-Cycle Analysis
(Standard Interface) Simulate -> Full-Vehicle Analysis -> Driveline Tests -> Rock-Cycle
Performs a rock-cycle analysis. See Setting up Rock-Cycle Analyses.
Adams Driveline sets the input torque according to the value you enter in the dialog box. During the rock-cycle analysis, Adams Driveline submits the vehicle alternatively to a positive and a negative engine torque simulating a first gear-reverse gear engagement.
For the option: | Do the following: |
|---|---|
Assembly | Select the assembly you want to analyze. The menu lists all open assemblies. |
Assembly Variant | Select the assembly variant you want to analyze. The menu lists all full-vehicle assembly variants of the chosen assembly. |
 | Switches to the selected variant and adds the required testrig as needed. |
Output Prefix | Enter a string that specifies the Analysis Output Name. The string can contain only alphanumeric characters and underscores (_). Adams Driveline appends the suffix _rock_cycle to form the complete analysis name. For example, if you enter test45 as the output prefix, the analysis name becomes test45_rock_cycle. |
End Time | Enter a number greater than zero to specify the duration of the Simulation. |
Number of Steps | Enter the number of output steps in output files (.req, .gra). It affects the resolution of your animations and plots. Make sure that the number of steps you specify is high enough to display the highest frequency you want to observe. |
Mode of Simulation | Select interactive, background, or files only. |
Road Data File | Specify a road data file. Tire subsystems use the information in road data files to calculate the tire/ground interaction forces. If your model uses ride tire subsystems, Adams Driveline automatically deactivates this text box because tire/ground interaction forces are evaluated in a different way. For more information about road data files, see the Adams Tire online help. |
Max Forward Torque | Enter a value of engine torque that Adams Driveline applies when the vehicle is moving forward. |
Max Rearward Torque | Enter a value of engine torque that Adams Driveline applies when the vehicle is moving backward. |
Distance | Enter the distance the vehicle should move. When the vehicle moves, either backward or forward, a distance equal to the distance specified in this text box, the engine torque automatically changes sign. Adams Driveline performs the transition from Max Forward Torque to Max Rearward Torque in a time equal to the time you specified in the Shift Time textbox. |
Shift Time | Enter the time needed to switch from Max Forward Torque to Max Rearward Torque and back again, when the distance has reached the desired value. |
Engine Dyno | Select the engine dyno you want to use to apply the correct engine torque to the model. During the analysis set-up phase, Adams Driveline sets the dyno type to torque and the function type to torque demand, so that the maneuver can be submitted correctly. |
Create Analysis Log File | Select if you want Adams Driveline to write information about the assembled model and simulation to a log file. Adams Driveline names this log file after the output prefix and an output suffix, depending on the full-vehicle analysis you selected. The log file contains information about the type and success of the analysis, date and user, analysis parameters, and the active subsystem used in the simulation. |
 | Select to display the Modify Entity Comments dialog box, where you can add multi-line comments to any entity to describe its purpose and function. Learn about Recording Comments. |
 | Select to display an Alignment dialog box where you can set toe, camber and caster alignment values. |
Friction Coeff | Select to display the Modify Friction Coefficients dialog box. If you have an assembly with rtire models, you can use the Modify Friction Coefficients dialog box to modify the friction characteristics for each tire. For information about rtire, see Ride Wheels. |