MSc Adams Car KnC analysis

[CSS_30]

I'm trying to perform KnC (Static) analysis in MSc adams. The simulation is showing following error( check attachment). The runs perfectly fine for couse events.

Can you please explain how can I identify and correct the request 359 as shown in the error.

 

[GregLocock]

So, look in the .adm file at around line 13277, and decode the REQ call. I can't tell from the screenshot what is wrong, exactly, but if it isn't a syntax error then it looks as though GFORCE/9 doesn't exist. That doesn't surprise me, in my dynamic models GFORCE is only used for each tire contact patch. However in a rig test I get this sort of thing for tire contact patch forces, so yes, it is probably shenanigans to do with the rig test. What event are you running?

! requests for fmx, rmx and tmx (might need to be changes).
! output is in Nmm.

!20409, 20509,30421,20523 have to be variables.

REQ/11115,
, F2 = 0.5*(GFORCE(1,0,4,3)-GFORCE(2,0,4,3))*DY(10409,10509), F3 = 0.5*(GFORCE(3,0,4,3)-GFORCE(4,0,4,3))*DY(352671,352681), F4 = (0.5*(GFORCE(1,0,4,3)-GFORCE(2,0,4,3))*DY(10409,10509)) 
, + (0.5*(GFORCE(3,0,4,3)-GFORCE(4,0,4,3))*DY(352671,352681)), COM=fmx_rmx_tmx

Cheers

Greg Locock


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[GregLocock]

Indeed there is. Maybe you found it.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[CSS_30]

Hey, I've solved the previous error, but i'm facing following error when i simulate roll in KnC analysis. I've tried to look for Rev Joint 33 in the .amd file, but i can't find it. Is this because the joint is in test-rig template? Also, how can test-rig joints turn redundant while running the simulation?


-------------------------------------------------------------------------------
| Model Title |
|=============================================================================|
| |
| <private>/assemblies.tbl/s2.asy |
| |
-------------------------------------------------------------------------------

command: !
command: !INFO Adams Version: Adams 2019.2
command: !INFO Adams Build: 2019.2.0-CL661333
command: !INFO Assembly File: <private>/assemblies.tbl/s2.asy
command: !INFO Solver Library: C:/PROGRA~1/MSC~1.SOF/Adams/2019_2/win64/acar_solver.dll
command: !
command: preferences/solver=CXX
command: preferences/list,status=on
PREFERENCES:
SIMFAIL = NOSTOPCF
Contact Geometry Library = (not loaded)
Thread Count = 1
Library Search Path = Not Set
Status Message = On
Solverbias = CXX (C++ Solver)

command: deactivate/motion,range=2,8
Deactivated model.testrig.motion_rot_z, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_y, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_x, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_z, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_y, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_x, force/torque values will be zero in function-expression references.
command: control/routine=abgTire::con901,func=user(901,102,54,60,1,2)
command: control/routine=abgTire::con901,func=user(901,106,55,61,1,4)
command: control/routine=abgTire::con901,func=user(901,110,63,69,1,6)
command: control/routine=abgTire::con901,func=user(901,114,64,70,1,8)
command: !
command: deactivate/motion,ID=15,18,27,30 ! X motions
Deactivated model.testrig.motion_trans_x_61001, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_x_62001, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_x_63001, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_x_64001, force/torque values will be zero in function-expression references.
command: deactivate/motion,ID=16,19,28,31 ! Y motions
Deactivated model.testrig.motion_trans_y_61002, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_y_62002, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_y_63002, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_y_64002, force/torque values will be zero in function-expression references.
command: deactivate/motion,ID=14,17,26,29 ! Z motions
Deactivated model.testrig.motion_trans_z_61003, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_z_62003, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_z_63003, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_trans_z_64003, force/torque values will be zero in function-expression references.
command: deactivate/motion,ID=22,25,34,37 ! Yaw motions
Deactivated model.testrig.motion_rot_z_61004, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_z_62004, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_z_63004, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_z_64004, force/torque values will be zero in function-expression references.
command: deactivate/motion,ID=21,24,33,36 ! Pitch motions
Deactivated model.testrig.motion_rot_y_61005, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_y_62005, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_y_63005, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_y_64005, force/torque values will be zero in function-expression references.
command: deactivate/motion,ID=20,23,32,35 ! Roll motions
Deactivated model.testrig.motion_rot_x_61006, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_x_62006, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_x_63006, force/torque values will be zero in function-expression references.
Deactivated model.testrig.motion_rot_x_64006, force/torque values will be zero in function-expression references.
command: ! Keep actuator platforms flat, pitch & roll=0

ERROR: This is not an Adams Command Language keyword.
ERROR: Statement : No statement found
ERROR: Error line text : '[[roll]]=0'
ERROR: Error token text : 'ROLL'
ERROR: Error token type : identifier


---- START: ERROR ----
Errors found parsing command. Command ignored.
---- END: ERROR ----

command: activate/motion,ID=21,24,33,36
command: activate/motion,ID=20,23,32,35
command: simulate/statics


Begin Static Solution

TIRE ID: 2
TYR910 -> Pacejka 2002 Tire Model
Using 2D Road
One point Contact

TIRE ID: 4
TYR910 -> Pacejka 2002 Tire Model
Using 2D Road
One point Contact

TIRE ID: 6
TYR910 -> Pacejka 2002 Tire Model
Using 2D Road
One point Contact

TIRE ID: 8
TYR910 -> Pacejka 2002 Tire Model
Using 2D Road
One point Contact


STATICS: Original static solver will be used with the Sparse linear solver.

Static Solution converged in 6 iterations
Residual imbalance is less than 5.82971E-07

End Static Solution

Simulate status=0

command: !Perform SVC Analysis
command: control/routine=apreSOL::con1111, function=user(1111,-1,0,0,0,0,611,612,591,594)

SVC>>flt_svccsb: STARTING FULL-VEHICLE SVC CALCULATIONS.
command: sim/stat


Begin Static Solution


STATICS: Original static solver will be used with the Sparse linear solver.

Static Solution converged in 3 iterations
Residual imbalance is less than 4.17575E-05

End Static Solution

Simulate status=0


SVC>>flt_svccsb: COMPUTING FRONT COMPLIANCE MATRIX.

SVC>>flt_svccsb: COMPUTING REAR COMPLIANCE MATRIX.

SVC>>flt_svccsb: COMPUTING TIRE COMPLIANCE MATRIX.

SVC>>flt_svccsb: USING THESE TIRE STIFFNESSES:
1.00000E+02 1.00000E+02 5.00135E+01 0.00000E+00 0.00000E+00 0.00000E+00
1.00000E+02 0.00000E+00 5.00175E+01 0.00000E+00 0.00000E+00 0.00000E+00
0.00000E+00 0.00000E+00 4.99980E+01 0.00000E+00 0.00000E+00 0.00000E+00
0.00000E+00 0.00000E+00 5.00026E+01 0.00000E+00 0.00000E+00 0.00000E+00

SVC>>flt_svccsb: REMOVING BODY DOF.

SVC>>flt_svccsb: REMOVING FRONT TIRE STIFFNESSES.

SVC>>flt_svccsb: REMOVING REAR TIRE STIFFNESSES.

SVC>>flt_svccsb: COMPUTING GENERAL SVCS.

SVC>>flt_svccsb: COMPUTING FRONT SVCS.

SVC>>flt_svccsb: COMPUTING REAR SVCS.

SVC>>flt_svccsb: WRITING OUTPUT FILES.

SVC>>flt_svccsb: UPDATING vehicle_parameters_ARRAY_front.
command: array/591,NUMBERS=1428.07,550.69,1322.77,1.00,0.55,1.00,283.73,50.01,50.02

SVC>>flt_svccsb: UPDATING vehicle_parameters_ARRAY_rear.
command: array/594,NUMBERS=1428.07,550.69,1322.77,0.00,0.45,1.00,284.06,50.00,50.00
command: sim/stat


Begin Static Solution


STATICS: Original static solver will be used with the Sparse linear solver.

Static Solution converged in 1 iterations
Residual imbalance is less than 4.98993E-08

End Static Solution

Simulate status=0


SVC>>flt_svccsb: RETURNING TO ADAMS COMMAND FILE.
command: variable/297, function=0
command: output/nosep
command: preferences/simfail=stop
command: activate/motion, range=2 ,8
command: activate/motion,ID=15,18,27,30 ! X motions
command: activate/motion,ID=16,19,28,31 ! Y motions
command: activate/motion,ID=14,17,26,29 ! Z motions
command: activate/motion,ID=22,25,34,37 ! Yaw motions
command: GFORCE/2, FX=0
command: GFORCE/2, FY=0
command: GFORCE/2, FZ=0
command: GFORCE/2, TX=0
command: GFORCE/2, TY=0
command: GFORCE/2, TZ=0
command: GFORCE/4, FX=0
command: GFORCE/4, FY=0
command: GFORCE/4, FZ=0
command: GFORCE/4, TX=0
command: GFORCE/4, TY=0
command: GFORCE/4, TZ=0
command: GFORCE/6, FX=0
command: GFORCE/6, FY=0
command: GFORCE/6, FZ=0
command: GFORCE/6, TX=0
command: GFORCE/6, TY=0
command: GFORCE/6, TZ=0
command: GFORCE/8, FX=0
command: GFORCE/8, FY=0
command: GFORCE/8, FZ=0
command: GFORCE/8, TX=0
command: GFORCE/8, TY=0
command: GFORCE/8, TZ=0
command: deactivate/jprim, range=10 ,11
Deactivated model.testrig.josinl_body_stake, force/torque values will be zero in function-expression references.
Deactivated model.testrig.josper_yaw_stake, force/torque values will be zero in function-expression references.
command: !
command: !
command: simulate/statics


Begin Static Solution

Time T=0.000000000E+00.
Degree-of-freedom analysis identified redundant constraints in the model:
-------------------------------------------------------------------------
- deactivating constraint equation Zi.Zj in model.testrig.josper_per_tire_lr
- deactivating constraint equation Zi.Xj in model.testrig.jostra_trans_x
- deactivating constraint equation Zi.Yj in model.testrig.josrev_rot_x
- deactivating constraint equation Zi.Yj in model.S1_REAR_17.jorrev_hub_to_control_arm

STATICS: Original static solver will be used with the Sparse linear solver.

Static Solution converged in 4 iterations
Residual imbalance is less than 0.00000E+00

End Static Solution

Simulate status=0

command: !
command: save/system, file=xxcarxx_13873089.sav
command: !
command: ! roll motion test left turn then right turn
command: reload/system, file=xxcarxx_13873089.sav, out=knc_roll_kcse

Current simulation terminated due to RELOAD command.

The following line is a separator for the Adams Solver (C++) message file.
<++>


OS-environment variable
MSC_ADAMS_OPENMP=ON
Enforces Adams Solver (C++) to enable or disable OpenMP usage. Values are ON or OFF.


RELOAD from xxcarxx_13873089.sav successful. System time is now 0

command: motion/20, function = 4.0 * dtor * shf(time,0,1,360d,0,0)
command: motion/23, function = 4.0 * dtor * shf(time,0,1,360d,0,0)
command: motion/32, function = 4.0 * dtor * shf(time,0,1,360d,0,0)
command: motion/35, function = 4.0 * dtor * shf(time,0,1,360d,0,0)
command: motion/14, function=varval(310) - varval(334)/2* sin(4.0 * dtor * shf(time,0,1,360d,0,0))
command: motion/17, function=varval(313) + varval(334)/2* sin(4.0 * dtor * shf(time,0,1,360d,0,0))
command: motion/26, function=varval(326) - varval(335)/2* sin(4.0 * dtor * shf(time,0,1,360d,0,0))
command: motion/29, function=varval(327) + varval(335)/2* sin(4.0 * dtor * shf(time,0,1,360d,0,0))
command: simulate/statics, duration=1.0, steps=100
Begin Simulation

****** Performing Quasi-Static Simulation ******
Time T=0.000000000E+00.
Degree-of-freedom analysis identified redundant constraints in the model:
-------------------------------------------------------------------------
- deactivating constraint equation Zi.Zj in model.testrig.josper_per_tire_lr
- deactivating constraint equation Zi.Xj in model.testrig.jostra_trans_x
- deactivating constraint equation Zi.Yj in model.testrig.josrev_rot_x
- deactivating constraint equation Zi.Yj in model.S1_REAR_17.jorrev_hub_to_control_arm
Simulation Step Function Cumulative CPU Slvr
Time Size Evaluations Steps Taken time type
___________ ___________ ___________ ___________ ________ ___
0.00000E+00 0.00000E+00 0 0 0.72 1

Time :1.000000000E-02
The system has at least one incompatible constraint
The redundant constraint with the largest violation is:
RevJnt/33 Zi.Yj
Subsequent simulation may not be reliable.
Please remove incompatible constraints explicitly from the system.


[highlight ]Time :5.000000000E-03
The system has at least one incompatible constraint
The redundant constraint with the largest violation is:
RevJnt/33 Zi.Yj
Subsequent simulation may not be reliable.
Please remove incompatible constraints explicitly from the system.
[/highlight]

Time :5.000000000E-03
The system has at least one incompatible constraint
The redundant constraint with the largest violation is:
RevJnt/33 Zi.Yj
Subsequent simulation may not be reliable.
Please remove incompatible constraints explicitly from the system.

 

[GregLocock]

I'd have thought the test rig was in the adm, do a gdiff or whatever on the adm between a K&C test (again what event are you using?) and one of your dynamic tests that ran successfully.




Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?