Select the full-vehicle assembly you want to analyze. The menu lists all full-vehicle assemblies currently open in your session.
Enter a string that specifies the analysis output name. The string can contain only alphanumeric characters and underscores (_). Adams/Car appends the suffix _brake to form the complete analysis name. For example, if you enter test_45 as the output prefix, the analysis name becomes test_45_brake.
Specify the number of output steps.
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.
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.
Open-Loop/Closed-Loop Brake
Select a mode for the longitudinal acceleration controller:
• Open loop - Specify a final brake value and a duration of step value. The brake will step from its initial value to the final value in the specified duration.
• Closed loop - Specify a longitudinal deceleration.
Enter the final value of the brake demand. This value will depend on how your brake system is modeled and the default units that have been used.
Enter the time it takes to step from the initial brake value (usually zero) to the final brake value. This is equivalent to the period of time taken to depress the brake pedal and brake pressure to build up.
Specify the initial transmission gear 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.
• free - Allows the steering wheel to rotate in response to forces transmitted to the steering subsystem from the tires and the suspension.
• locked - Locks the steering wheel at the design position.
Quasi-Static Straight-Line 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.
For more information about the different quasi-static setup method keywords (such as SETTLE and STRAIGHT), see Structure of Event Files.
• You have a steerable conceptual suspension subsystem, because there is no feedback that goes from the wheel to the steering system. For information about conceptual suspension subsystems, see Introducing the Conceptual Suspension Module.
• 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).
Select if you want Adams/Car to write information about the assembled model and analysis to an analysis log file.
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.