Zero connector reaction foreces

[dcattoni]

Hi Guys!

How it's going!!

I took an old model from a old workshop of abaqus in order to understand how connectors work.
Four connectors were created in order to simulate the four shock absorver. The shock absorver was modeled with a cartensian and cardan connectors. It was set an elastic behavior for the cartesian connector in order to simulate the spring of the shock absorver.
The model run well and the obtained results are in concordance with the applied force, weight force.
The problem is, when I wanted to draw connector reaction forces for the shock absorver, the correspond graphics showed zero forces! and I don't know whay!

I attached the model .inp and .cae version. If you need anything else, please let me know.

Thanks!!!!

Msc Ing. D Cattoni

 

[Mustaine3]

Without looking into the model... you only get reaction forces in DOF that were locked. If the connector acts like a spring, then you should look at the connector elastic forces and the connector displacements.

 

[FEA way]

Make sure that connectors are properly attached to the rest of the model and that you use correct output variables. You can request conenctor forces in history output.

 

[dcattoni]

Thanks fox
FEA way: I created two history output. One that it called YPR and other shock. The first one was created in order to monitor the Yaw, Pitch and Roll of the car, the other one contains CRF, CEF.

Mustaine3: The connector elastic forces in Y direction is fine and CEF1 and CEF3 are zeor and they are fine too.

I can't see where the problem is!

Thanks!


Msc Ing. D Cattoni

 

[Mustaine3]

By looking into the model I got the impression, that you are not aware of the difference between *Boundary and *Connector Motion.

 

[dcattoni]

Hi Mustaine3

Could you be more specific?


Thanks

Msc Ing. D Cattoni

 

[dcattoni]

Holy shit Mustaine3!!!!!

You are all right!! I got it!!!

I can see the light now!!

Thanks so much guys!!

Domingo

Msc Ing. D Cattoni