Adams Car Package > Adams Car > Dialog Box - F1 Help > Suspension Analysis: Steering

Suspension Analysis: Steering

(Standard Interface) Simulate → Suspension Analysis → Steering

For the option:	Do the following:
Suspension Assembly	Select the Suspension Assembly you want to analyze. The menu lists all suspension assemblies currently open in your session.
Assembly Variant	Select the assembly variant you want to analyze. The menu lists all suspension 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 _steering to form the complete analysis name. For example, if you enter test_45 as the output prefix, the analysis name becomes test_45_steering.
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	Enter a value that corresponds to the number of Solution Steps from the lower bounds to the upper bounds of input.
Mode of Simulation	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.
Vertical Setup Mode	Specifies the vertical control method at time=0. Vertical setup will be performed with either the wheel center height or the contact patch height moved to zero. For more information please see the tutorial Adding the vertical setup mode of Adams Car Suspension Testrig.
Upper Steering Limit	Enter a real value that fixes the upper limit of steer travel. Adams Car interprets this value as: ■Rack travel, if Steering Input = Length ■Steering-wheel angle, if Steering Input = Angle
Lower Steering Limit	Enter a real value that fixes the lower limit of steer travel. Adams Car interprets this value as: ■Rack travel, if Steering Input = Length ■Steering-wheel angle, if Steering Input = Angle
If suspension is built with __MDI_TASA_TESTRIG (available in Adams Car Truck plugin), then Fore Axle and Aft Axle tabs will be displayed. The following options are available:
Fore Axle	Used to define inputs for fore axle. By default, the values provided in the fields on Fore Axle tab will be applied to the fields on Aft Axle tab.
Aft Axle	Used to define inputs for aft axle. Fields on the Aft Axle tab are optional. If values are not provided, they will be inherited from the Fore Axle tab.
Left Wheel Fixed Height (optional)	Enter a real value that fixes the left vertical wheel-center height relative to the design configuration. For example, if you enter -50 mm, Adams Car displaces the left wheel center or contact patch 50 mm downward from its input position and then sweeps the steering from its lower to upper bound.
Right Wheel Fixed Height (optional)	Enter a real value that fixes the right vertical wheel-center height relative to the design configuration. For example, if you enter -50 mm, Adams Car displaces the right wheel center or contact patch 50 mm downward from its input position and then sweeps the steering from its lower to upper bound.
Travel Relative To	Select one of the following: ■Wheel Center - Represents the center of the wheel. ■Contact Patch - Represents the point of contact between the tire and the road.
Control Mode	Specifies how the vertical displacement is controlled. ■Absolute - vertical displacement is controlled with absolute displacement value ■Relative - vertical displacement is controlled with displacement relative to the position at setup phase.
Steering Input	Select one of the following: ■Angle - The steering input is an angle applied to the steering wheel. ■Length - The steering input is a length travel applied to the rack.
Coordinate System	Select one of the following: ■Vehicle - Independent tables ■Iso - Dependent or tilting tables The icon shows the difference between the vehicle and iso coordinate systems.If you use the iso coordinate system, and the left and right wheel heights are different, the results will vary slightly than if you use identical wheel heights but use the vehicle coordinate system.
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.
If input communicator of type solver variable 'cis_pseudo_velocity’ get communicated. The following option is available.
Pseudo Velocity	Enter Pseudo velocity. If your steering model is of type four wheel steer and spline (velocity based) is selected as an option for "rear steering method" design option then this pseudo velocity will be used to drive the steering.