Adams Car Package > Adams Car > Dialog Box - F1 Help > Full-Vehicle Analysis: Braking-In-Turn

Full-Vehicle Analysis: Braking-In-Turn

(Standard Interface) Simulate → Full-Vehicle Analysis → Cornering Events → Braking-In-Turn
Runs a Braking-In-Turn 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 _bit to form the complete analysis name. For example, if you enter test_45 as the output prefix, the analysis name becomes test_45_bit.
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.
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.
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.
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.
Gear Position
Specify the initial gear position for the analysis.
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.
Lateral Acceleration (G's)
Enter the target lateral acceleration that will be achieved at the start of the braking event.
Turn Radius
Enter the turn radius (in length units) of the skidpad on which the vehicle will perform the analysis.
Length Units
Select the length units for the turn radius.
Note: These units are not used for Entry Distance.
Turn Direction
Select a right or a left turn.
Steering Input
Select either of the following:
■Lock steering while braking - Instructs the Driving Machine controller to maintain the steering angle from the previous mini maneuver. Use this option to understand the vehicle trajectory during the braking event, if a driver were to lock the steering wheel.
■Maintain radius while braking - Instructs the Driving Machine controller to maintain the desired radius. Use this option to investigate the driver activity required to maintain a path. Values of interest typically include the steering-wheel angle and steering-wheel torque.
Brake Deceleration (G's)
Maximum Brake Duration
Enter the time after which Adams Car should stop the braking maneuver.
Disengage Clutch
Select it if you want Adams Car to step the clutch signal to one (disengaged clutch) with the specified parameters of delay and step duration.
Clutch Delay
Specify the duration of time between the end of the first mini-maneuver and the actuation of the clutch signal.
Clutch Step Duration
Stepped down from zero to one (clutch disengaged) in the specified amount of time.
Quasi-Static Skidpad Setup
Select to perform a quasi-static prephase analysis before running the transient analysis on your full-vehicle assemblies.
■For all cornering analyses, selecting this option causes Adams Car to perform a SKID_PAD quasi-static analysis.
■For all other analyses, selecting this option causes Adams Car to perform a STRAIGHT (sometimes called ClearVision adjustment) analysis.
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.
Note: You cannot select the Quasi-Static Setup option if:
■You do not have a powertrain subsystem in your vehicle assembly, because it is not possible to set the initial condition for the longitudinal or the lateral dynamics (throttle position).
Regen Ratio
If Toggle button selected then enter regeneration ratio using expression.
Note: Regeneration ratio assigned to vas_regenerative_demand actuator from SDI testrig whose value will be updated on the fly during simulation.
Expression
Enter regeneration braking ratio value or expression.
Entry Distance
Enter a numerical value that defines the initial straight-line section of the analysis. Use the pull-down menu to select the unit definitions; for example, 20 m.
Settle Time
Enter a value that describes the duration of the intermediate mini-maneuver INITIAL_SET. See Creating Mini-Maneuvers.
Learn more about INITIAL_SET at 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.
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.
 
Note:  
Regeneration container will be activated only when communicator (regenerative_demand) from SDI testrig and powertrain is matched. This is only supported for __MDI_SDI_TESTRIG testrig.