Full-Vehicle Analysis: Embankment

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 generates the output files following this naming convention: the output files are called output_prefix_external_file_name to form the complete analysis name. For example, if you enter test_45 as the output prefix, and if you submit a sine_steer.dri loadcase file, then the output file name becomes test_45_sine_steer.

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 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.

Enter the name of a file that contains road data information. The tire subsystems use this information to calculate the tire/road interaction forces.

Tips on Entering File Names in Text Boxes

You have to 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.

Road Type

Select embankment road type rigid or soft soil. An .rgr road is generated from the 3D Shell .rdf road data file. The soft soil road type options (soft soil, loose sand and lete sand) require a Cosin "ftsoil" license. If a license is not available the soft soil road type options will be removed from the options menu.

Use .rdf

For Road Type = "rigid" only: Use a 3D shell road representation (.rdf) instead of a regular grid road (.rgr).

The 3D shell road representation is default when no cosin software has been installed and the COSIN_PREFIX variable has been set.

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.

Gear Position

Specify the initial gear position for the analysis. The powertrain subsystem uses this parameter, which generally acts as a gain for the brake-demand output from the cruise control. The parameter is constant throughout the analysis.

Suggested Gear Position based on desired Initial Velocity. 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.

Embankment Position

Position the embankment on the left or right side of the vehicle.

Steering Trigger Point

Enter the distance at which the counter open-loop steering ramp should be started.

Steering Delay

Enter the delay time between the steering trigger point and the actual steering action on the vehicle.

Steering Rate

Enter the rate at which the steering value will change.

Steering Final Angle

The steering stops at this angle.

Rollover Bar

Select Rollover Bar if you want to add a rollover bar to the embankment surface. You must enter the values for rollover bar height and position.

Bar Height: Enter the height of the rollover bar relative to the embankment surface.

Bar Position: Enter the position of the rollover bar relative to the ground surface.

Quasi-Static Straight-Line Setup

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

Selecting this option causes Adams Car to perform a STRAIGHT pre-phase analysis, otherwise a SETTLE will be performed.

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.

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.