Adams Car Package > Adams Car > Dialog Box - F1 Help > Quasi-Static Straight-Line Acceleration

Quasi-Static Straight-Line Acceleration

(Standard Interface) Simulate → Full-Vehicle Analysis → Static and Quasi-Static Maneuvers → Straight-Line Acceleration
Runs a Quasi-Static Straight-Line Acceleration 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 _ssa to form the complete analysis name. For example, if you enter test_45 as the output prefix, the analysis name becomes test_45_ssa.
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.
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.
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.
Desired Velocity
Specify the velocity of the vehicle during the acceleration test. The velocity should match the units specified in the units pull-down menu. This velocity will be held constant during the quasi-static acceleration analysis.
Longitudinal Accel (G's)
Enter the desired longitudinal acceleration in G's, where 1 G is approximately 9.81 m/s2. Typical vehicles can accelerate anywhere between 0.2 and 0.5 G's.
■positive value = acceleration
■negative value = deceleration
If the Longitudinal Accel text box contains a value that is less than 0, Adams Car enables the following option:
Deceleration Method
Select one of the following:
■throttle off - The powertrain torque is applied to slow down the vehicle.
■braking - Braking forces are applied to slow down the vehicle.
Gear Position
Specify the transmission gear for the analysis. The gear is held constant throughout the analysis.
Create Event Log File
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.
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.