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Doubt regarding compliance matrix calculation error in suspension analysis

I have read online help regarding this matter and understand that whenever we perform a standard event (for eg Suspension Analysis-----> Steering, which I am trying on one of the projects), the compliance matrix is calculated for every Joint and then various elements of this matrix are used for calculating different requests such as Ride rate, ride steer and a number of other parameters. The model which I have built has a number of idealized constraints (Convel, spherical, revoulte, fixed joints in the steering template). I have tried to replace as many fixed joints in the suspension templates as possible with bushes to see if it worked, but the problem still persists. There are also no redundant constraints in the model. I have also double checked the communicators that I have used and ensured that none of the parts are inadvertently connected to the ground. without the matrix, none of the requests which use this matrix are being calculated. The model I am trying to simulate is that of a tandem axle front suspension with bell-crank equalizing links and twin steering. I have also taken a look at the same assembly from the shared truck database. There seem to be quite a lot of idealized constraints in that model, but still there seems to be no issue when I simulate a similar steering event using that model. Can anybody suggest any corrections I may be able to incorporate into my model to make it work?
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  • Hi guys,
    Just an update...I tried performing a small parallel wheel travel analysis on the model without the steering system. The simulation completed without any of the errors which I mentioned earlier in the conversation. So I guess, I have singled out the steering system as the cause of the error. As mentioned by Martin, the steering system does in fact have a lot of kinematic joints. So should I replace all of those joints with appropriate bushings? Thanks again..
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  • Hi guys,
    Just an update...I tried performing a small parallel wheel travel analysis on the model without the steering system. The simulation completed without any of the errors which I mentioned earlier in the conversation. So I guess, I have singled out the steering system as the cause of the error. As mentioned by Martin, the steering system does in fact have a lot of kinematic joints. So should I replace all of those joints with appropriate bushings? Thanks again..
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