Adams Car Package > Adams Car > Appendix > Special Requests > Steering Column Statistics

Steering Column Statistics

Computes steering wheel angle, lower intermediate shaft angle, steering gear input angle, as well as the torque at the steering wheel and in the column rag joint at each time step.
Input:
REQ/id, FUNCTION = USER (1117,swm,swrm,ism,gism,gisrm,tsc,swrm2,isrm)
where:
 
 
Description
swm
=
steering wheel MARKER id used in steering wheel MOTION statement
swrm
=
steering wheel reference MARKER id on body used in steering wheel MOTION statement
ism
=
intermediate shaft MARKER id at the upper end of the rag joint
gism
=
steering gear input shaft MARKER id
gisrm
=
steering gear input shaft reference MARKER id on steering gear
tsc
=
scale factor used to change units on the torque values
if tsc = 1.00 then steering torque is in N-mm
if tsc = 0.0088512 then steering torque is in in-lbs
swrm2
=
secondary steering wheel reference MARKER id
isrm
=
intermediate shaft reference MARKER id at the upper end of the rag joint
REQ/id, FUNCTION = USER (1118,swmid,swm,swrm,ism,gism,gisrm,tsc,swrm2,isrm)
where:
 
 
Description
swmid
=
steering wheel motion id
swm
=
steering wheel MARKER id used in steering wheel MOTION statement
swrm
=
steering wheel reference MARKER id on body used in steering wheel MOTION statement
ism
=
intermediate shaft MARKER id at the upper end of the rag joint
gism
=
steering gear input shaft MARKER id
gisrm
=
steering gear input shaft reference MARKER id on steering gear
tsc
=
scale factor used to change units on the torque values
if tsc = 1.00 then steering torque is in N-mm
if tsc = 0.0088512 then steering torque is in in-lbs
swrm2
=
secondary steering wheel reference MARKER id
isrm
=
intermediate shaft reference MARKER id at the upper end of the rag joint
 
Note:  
Branch 1118 uses steering wheel motion id as an additional parameter. This parameter is necessary if the user is interested in the frictional moments that acts at the steering wheel joint and is using Adams 9.0 or higher.
Request File Output
Column Number Output:
1. Steering wheel rotation (deg)
2. Steering wheel torque (*)
3. Torque in steering column rag joint (*)
4. Lower intermediate shaft angle (deg)
5. Steering gear input shaft angle (deg)
6. Angular compliance between steering wheel and (deg) steering gear input shaft
Notes on Input and Output
The steering wheel MARKER and reference MARKER must be those used in defining the steering wheel angle MOTION statement. The steering wheel torque is obtained by asking for the torque across the REVOLUTE JOINT which is acted on by the MOTION statement. The secondary steering wheel reference MARKER must have the same location and orientation as the steering wheel reference marker but must be mounted to the intermediate shaft.