Required input:

Vehicle parameters:

Suspension and steering travel:

Description of task:

An initial steering input is applied to the model and simultaneously the suspension is  moved to the initial wheel position. This is followed by a left and right rolling movement during which displacements of equal magnitude in opposite direction is applied.

Output:

Reports containing some plots, tabular results, and graphical animation are automatically created.

The following parameters are calculated during the simulation and the results are written to a text file (sdf.out).  The same results are also written into the request file as user requests.

Parameter

Units

Wheel Center Displacement

mm

Ground Reaction Force

N

Toe-in

deg

Steer Angle

deg

Camber Angle

deg

Caster

deg

Kingpin Inclination

deg

Scrub Radius

mm

Caster Trail

mm

Roll Angle

deg

Tread Width

mm

Tread Change

mm/m

Track Width

mm

Wheel Center X Stiffness

N/mm

Wheel Center Y Stiffness

N/mm

Wheel Center Z Stiffness

N/mm

Wheel Center XX Stiffness

N-m/deg

Wheel Center YY Stiffness

N-m/deg

Wheel Center ZZ Stiffness

N-m/deg

Parallel Lateral Force Deflection

mm/kN

Converging Lateral Force Deflection

mm/kN

Parallel Lateral Force Steer

deg/kN

Converging Lateral Force Steer

deg/kN

Parallel Lateral Force Camber

deg/kN

Converging Lateral Force Camber

deg/kN

Parallel Aligning Torque Steer

deg/100N-m

Converging Aligning Torque Steer

deg/100N-m

Longitudinal Force Deflection @ Wheel center

mm/kN

Longitudinal Force Deflection @ Tire patch

mm/kN

Longitudinal Compliance Steer @ Wheel center

deg/kN

Longitudinal Compliance Steer @ Tire patch

deg/kN

Longitudinal Caster Compliance @ Wheel center

deg/kN

Longitudinal Caster Compliance @ Tire patch

deg/kN

Side View Swing Arm Length

mm

Side View Swing Arm Angle

deg

Side View Swing Arm Fore/Aft Location

mm

Side View Swing Arm Vertical Location

mm

Front View Swing Arm Length

mm

Front View Swing Arm Angle

deg

Front View Swing Arm Lateral Location

mm

Front View Swing Arm Vertical Location

mm

Ride Steer

deg/m

Ride Caster

deg/m

Ride Camber

deg/m

Roll Steer

%

Roll Caster

%

Roll Camber

%

Roll Inclination

%

Wheel Rate

N/mm

Ride Rate

N/mm

Hop Rate

N/mm

Suspension Roll Rate

N-m/deg

Total Roll Rate

N-m/deg

Tramp Rate

N-m/deg

Roll Center Height

mm

Roll Center Lateral

mm

Anti-lift

%

Acceleration Lift

mm/g

Anti-dive

%

Brake Dive

mm/g

Tractive Force Steer

deg/g

Tractive Force Windup

deg/g

Brake Steer

deg/g

Spindle Length

mm

Spindle Offset

mm

Ideal Steer Angle

deg

Curb to Curb Diameter 1

m

% Ackerman 1

%

Ackerman Deviation 1

deg

Curb to Curb Diameter 2

m

% Ackerman 2

%

Ackerman Deviation 2

deg

% Ackerman 3

%

Curb to Curb Diameter 4

m

% Ackerman 4

%

Ackerman Deviation 4

deg