Full-Vehicle Analysis: 3D Road

Tips on Entering File Names in Text Boxes.

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 _smo to form the complete analysis output name. For example, if you enter test_45 as the output prefix, the analysis name becomes test_45_smo.

Solver Settings File

Select one or more files (extension .ssf) defining the solver settings to be temporarily applied for this simulation (optional).

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:

Simulation Mode

Select interactive, background, graphical, files or event only.

See Mode of Simulation: Interactive, Mode of Simulation: Graphical, Mode of Simulation: Background, Mode of Simulation: Files_only, Mode of Simulation: Event_only.

3D Road Data File

Select a 3D Road Data File. The extension is the same as that of other road data files, but its content is different: it contains information about the road's three-dimensional profile and it is used by the steering controller. For more information, see Road Models.

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.

Allows driving at the specified lateral path offset (unit of length) to the path as provided by the 3D Road Data File.

Initial Velocity

Enter the initial speed of the vehicle in the units specified in the pull-down menu to the right of the Initial Velocity text box.

Initial Gear Position

Specify the initial transmission gear for the analysis. The powertrain subsystem uses this parameter that generally acts as a gain for the throttle-demand output from the cruise control.

Adams Car stores the gear ratios in the powertrain subsystem.

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.

Speed Control

Select one of the following:

Driver Data File

Select a driver data file (.dcd) that defines an open- or closed-loop speed controller. Learn about Working with Driver Control Data Files (.dcd).

Longitudinal Accel (G's)

Enter a value of longitudinal acceleration, expressed in G's.

Start Time

Enter a real value that specifies the time at which the speed controller is to start.

Quasi-Static Straight-Line Setup

Select to perform a quasi-static prephase analysis before running the transient analysis on your full-vehicle assemblies.

If you do not select this option, Adams Car performs a SETTLE analysis.

For more information about the different quasi-static setup method keywords (such as SETTLE and STRAIGHT), see Structure of Event Files.

Create Event Log File

Select if you want Adams Car to write information about the assembled model and analysis to an Analysis Log File.

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.

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:

Learn about Recording Comments.

Select to display an Alignment dialog box where you can set toe, camber and caster alignment values.