Full-Vehicle Analysis: Cross Wind
(Standard Interface) Simulate → Full-Vehicle Analysis → Straight-Line Events → Cross Wind
Runs a Cross Wind Analysis.
For the option: | Do the following: |
|---|---|
Full-Vehicle Assembly | Select the Full-Vehicle Assembly you want to analyze. The menu lists all full-vehicle assemblies currently open in your session. |
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 Car appends the suffix _crw to form the complete analysis name. For example, if you enter test_45 as the output prefix, the analysis name becomes test_45_crw. |
Solver Settings File | Select one or more files (extension .ssf) defining the solver settings to be temporarily applied for this simulation (optional). Note: Solver settings files are applied in the order specified, so if multiple .ssf files contain the same solver settings, the last file in the list determines those settings. |
 | Opens the Solver Settings File (extension .ssf) editor dialog box. |
End Time | Specify the time, in seconds, at which the analysis ends. |
Number of Steps / Step Size / Step Frequency | Select either of the following: ■Number of Steps: Specify the number of Output Steps. ■Step Size : Specify the size of the Output Steps. ■Step Frequency : Specify the number for the output frequency. |
Simulation Mode | Select interactive, background, graphical, files or event only. |
Enter the name of a file that contains road data information. The tire subsystems use this information to calculate the tire/road interaction forces.You can also use a 3D road in this context. Make sure that the vehicle remains on the road, because 3D roads are not as wide as 2D flat roads. | |
 | Import and visualize road graphics from file. |
 | Remove road or path graphics. |
 | View road / path file in info window. |
 | Edit road / path file in road builder or text editor. |
Vehicle Velocity | Enter the initial velocity of the vehicle in the units specified in the pull-down menu to the right of the Vehicle Velocity text box. |
Gear Position | Specify the initial transmission gear for the analysis. The powertrain subsystem uses this parameter, which generally acts as a gain, for the throttle-demand output from the cruise control. Gear shifting can be turned on. |
 | Suggested Gear Position based on desired Initial Velocity (or equivalent lateral acceleration and curvature radius for constant radius cornering events). The button suggests the gear position for the event in order for the engine speed to be in the range between stall speed and max revolution limit. |
Input Type | Select a mode for the required parameters of the event: ■User-defined - Specify the required ordinal, wind velocity, wind angle and wind zone distance/time parameters. ■Wind File - Specify wind file which contains all the required data. For more information, see Example Wind File. As shown in the example wind files, you can choose distance or time or direct force inputs to modify existing aerodynamic force. |
If you select User-defined, Adams Car displays the following option: | |
Wind Spline Ordinal | Select one of the following: ■Distance - wind velocity and angle spline used will be with respect to distance. ■Time - wind velocity and angle spline used will be with respect to time. |
Wind Velocity | Enter the speed of the wind in the units specified in the pull-down menu to the right of the wind velocity text box. |
Wind Angle | Enter the angle at which the wind will attack on the vehicle. |
Length Units | Select the length units for defining wind zone parameters. By default, the length units are the model units. |
Entry Distance | Enter a numerical value that defines the initial straight-line section of the analysis. |
Transition Length | Enter distance to transition from zero wind velocity to specified wind velocity. |
Wind Zone Length | Enter a numerical value that defines the length of the cross wind attacking zone. |
If you select Time for Wind Spline Ordinal, Adams Car displays the following option: | |
Start Time | Enter a numerical value that defines the initial time of the analysis. |
Transition Time | Enter time to transition from zero wind velocity to specified wind velocity. |
Wind Zone Time | Enter a numerical value that defines the time for cross wind attacking zone. |
If you select Wind File, Adams Car displays the following option: | |
Enter the name of a file that contains wind data information. The aerodynamic force use this information to calculate the aerodynamic forces acting on the vehicle. Tips on Entering File Names in Text Boxes | |
Add Vehicle Dynamics Requests | Activates requests computing certain vehicle dynamics outputs during the full vehicle event. Some of these additional requests are required for standard post-processing (reports and plots). |
Compute Characteristic Values | Activates requests computing suspension and steering characteristics during the full vehicle event. The additional requests are equivalent to those previously already available for suspension analysis. See Output of Suspension Analyses in Adams Car - Running Analysis for more details. Note: This feature is only available for C++ Solver. |
 | Select to display a dialog box where you can add multi-line comments to any entity, to describe its purpose and function. Adams Car displays different comments dialog boxes, depending on the entity type for which you want to record comments: ■If recording comments for modeling entities in Standard Interface, Adams Car displays the Entity Comments dialog box. ■If recording comments for any other entity type, Adams Car displays the Modify Comment dialog box. Learn about Recording Comments. |
 | Select to display an Alignment dialog box where you can set toe, camber and caster alignment values. |
 | Construct road graphics from event user inputs. |