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unknown error

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M.M.Hafez

M.M.Hafez

Automotive
Joined
Feb 21, 2019
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2
Location
GB
I am trying to model a scaled model for a tractor semi-trailer on MSC ADAMS car, in addition I have the same model in reality and I moved it and record the 6 degrees of freedom.

I will then compare between my experimental model (the real one) and the simulation model to validate the simulation model.

After the validation I will connect this model with a control system (co-simulation) with Simulink model.

I divided the tractor to seven sub-systems (front wheels, rear wheel first axle, rear wheel second axle, chassis rigid body, front steering, front suspension, rear suspension)

I didn’t model the semi-trailer yet as I need to see if the tractor will be successful, then I will model the trailer.

I change all the property files for the springs, dampers, bushing, tire model to be as same as the scaled data.

I test each system separately on ADAMS view and it didn’t give me any error

When I combine all of them together as a full vehicle assembly, then single lane change it gives me error.

I tried to see what is wrong but I couldn’t understand my fault.

I attached a folder contains everything of my model.

I hope you can help me to understand what is my fault.


 
 https://files.engineering.com/getfile.aspx?folder=a17a5568-e496-4eb7-9b58-388f6eb37000&file=e-mail_support.zip
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I don't have a powertrain but anyway I run the simulation and it gives me the same error



---- START: ERROR ----

Static equilibrium analysis has not been successful.
The maximum number of iterations 75, has been reached.
For the last attempted iteration:
The equation with the largest error was model.tractor_rigid_chassis_modified_weight.ges_frame Comp = 8 Error = 417.483580
The variable receiving the largest increment was model.tractor_rear_suspension_modified_weight.small_lever_to_first_axle Comp = 4 Delta = 2098.154358.

---- END: ERROR ----
Static Solution failed to converge

End Static Solution

Simulate status=-124


acar_2016.0.0/vdm::apre_fvbcsb
**** Error:

Sim/stat cannot be achieved.


---- START: ERROR ----
Aborting Execution.

---- END: ERROR ----


---- START: ERROR ----

Adams Solver (C++) run terminating due to STOP requested by user.


---- END: ERROR ----

Termination status=-995

Terminating Adams Car usersubs...


Finished -----
Elapsed time = 1.60s, CPU time = 0.95s, 59.40%
Simulation is complete.

I don't know what is wrong with the frame and tire.
I wish this helps you in assessing my error
 
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