Static Load
(Standard Interface) Simulate -> Suspension Analysis -> Create Loadcase -> Select Loadcase Type = Static Load
Creates a static load loadcase file. Learn about loadcase files with Setting up Suspension Analyses.
For the option: | Do the following: | |
|---|---|---|
Aligning Torque | Enter values for the left and the right wheel that fix the upper bound and the lower bound of the aligning torques applied between ground and tire patches at the contact patches location. | |
Cornering Force | Enter values for the left and the right cornering force, applied at the contact patch. ISO-W Coordinates are used (positive is left from a drivers perspective). See Notes for reference frame info | |
Braking Force | Enter values for the left and the right wheel that fix the upper bound and lower bound of the braking force applied between the test rig table and the wheels, at the tire contact patch. Positive braking force acts in the direction of the rear of the vehicle. This is in the negative direction of the ISO/Tydex coordinate system (see Notes). | |
Traction Force | Enter values for the traction force, applied at the wheel center. | |
Vertical Length/Force | Enter values for the vertical wheel input. | |
Vertical Input | Select one of the options presented next: | |
This option: | Lets you: | |
Contact Patch Height | Control the height of the contact patch point. The vertical actuators will move the suspension in the range you specify in the Vertical Length text box. | |
Wheel Center Height | Control the height of the wheel center points. The vertical actuators will move the suspension in the range you specify in the Vertical Length text box. | |
Wheel Vertical Force | Control the absolute vertical force generated by the tire. The vertical actuators will move the suspension in the range you specify in the Vertical Force text box. | |
Wheel Delta Vertical Force | Control the relative vertical force generated by the tire. The vertical actuators will move the suspension in the range specified by the vertical force fields. The force is relative to the vertical tire force generated between the wheel and the pads at static equilibrium position. For example a +-100 N with this option selected means that the test rig will apply +-100 N starting from the static equilibrium load. | |
Actuator Vertical Force | Directly specify the vertical actuator loads. | |
Overturning Tor. | Enter values for the overturning torque. | |
Roll. Res. Torque | Enter values for the rolling resistance torque. | |
Damage Force | Enter values for the damage force. Adams Car applies damage forces perpendicularly to the plane containing the wheel part. They are expressed in the ISO-C (TYDEX C) axis system. For more information, see the About Axis Systems and Sign Conventions section. | |
Damage Radius | Enter values for the left and right damage radius. The damage radius determines the position of the point of application of the damage forces: ■A damage radius of 0 corresponds to damage forces applied directly at the wheel center (therefore, at the origin of the ISO-C (TYDEX C) axis system). ■A damage radius of 100 mm corresponds to damage forces applied to a point 100 mm in the negative z direction of the ISO-C (TYDEX C) axis system. For more information, see the About Axis Systems and Sign Conventions section. | |
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. | |
Steer Upper/Lower Limit | Enter values that fix the upper bound and the lower bound of the rack displacement (if Steering Input is Length), or of the steering wheel (if Steering Input is Angle). Positive rack displacement moves the rack towards the vehicle's right side. Positive steering-wheel angles rotate the steering wheel counterclockwise, typically steering the vehicle to the left. | |
Coord. 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. | |
Notes: | ■Positive values for bump and rebound travel move the wheel centers upward from the design position. Negative values move the wheel centers downward. ■Positive steering-wheel angle rotates the steering wheel counter-clockwise as if making a left turn. ■Positive rack displacement moves the rack toward the right side of the vehicle. ■Forces and torques are expressed as follows: | ||
Force: | Point of application: | Reference frame: | |
Lateral force (cornering) | Contact patch | TYDEX H ISO-W | |
Longitudinal force (braking) | Contact patch | TYDEX H ISO-W | |
Longitudinal force (acceleration) | Wheel center | TYDEX C ISO-C | |
Overturning moments | Contact patch | TYDEX H ISO-W | |
Rolling resistance torque | Contact patch | TYDEX H ISO-W | |
Aligning torque | Contact patch | TYDEX H ISO-W | |
For more information about reference frame, see the About Axis Systems and Sign Conventions section in the Adams Tire online help. | |||