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Hii

when i perform analysis for full vehicule it shows this ERROR message : At time=5.403E+00 the integrator failed to proceed. How can i solve the problem while i don't have inertial matrix values of the rear suspension ?
 
----------- Possible Causes -----------------------------------------------------
(1) The integration has become unstable. Tighten (decrease) integr_tol, h_max,
or both in Param_Transient can help stabilize the integration. If the simulation
contains distinctive phases, use multiple Simulate, each with its
own proper integrator parameter setting, to selectively tighten the tolerance
during the period where instability is encountered.
(2) If the simulation was terminated because stepsize has diminished consistently
below h_min, reduce h_min in Param_Transient to force integration to continue.
(3) Non-physical inertia properties, such as mass=100 Kg and Ixx=Iyy=Izz=1 Kg*mm^2,
or extremely small inertia on a part with an unconstrained degree of freedom. 
Make sure the modeling data, in particular the part inertia and the gravity, are
specified in proper units consistent with the units given in Param_Unit element.
(4) Beam, flexible body goes out of linear range, bushing has large rotation along
more than one axis, curve goes out of its interpolation range, higher-pair joint 
goes out of the range of U or V, etc. Make sure fundamental modeling assumptions, 
such as rigid contact assumption used in Force_Contact, are not violated.
(5) Motion displacement defined using LINSPL, AKISPL in dynamic analysis, or as a
function of model states (DX, VX etc), as well as forces defined as a function of
other forces, can cause hard convergence and integrator failure. Avoid these
modeling practices wherever possible.

 

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@riham1994

 

Are you using wizard model to run the full vehicle simulation?

 

If yes, did you change anything within the model? this could have caused this error.

 

If possible, please share the model file and .log file.

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I need these files from you

 Message: Error: Could not succesfully read h3d file
              "C:/Users/Madrex-101/Desktop/RIHAM_CALCUL/Modele_vehicule/triangle
              G/triangle G.h3d"
specified for flexbody "Lwr control
              arm-Flexbody-left" under "Model-Frnt macpherson susp (1 pc. LCA)".
              This h3d file may not contain MotionSolve specific information.
   2 Message: Error: Could not succesfully read h3d file
              "C:/Users/Madrex-101/Desktop/RIHAM_CALCUL/Modele_vehicule/triangle
              D/triangle.h3d
" specified for flexbody "Lwr control
              arm-Flexbody-right" under "Model-Frnt macpherson susp (1 pc.
              LCA)". This h3d file may not contain MotionSolve specific

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i tried an integration tolerance of 1, but the results are not satisfying at time 2.49 the front suspension become deformable as the capture below shows it 

 

 

Capture.JPG

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@riham1994

 

Yes, it may happen as you are loosing the tolerance and reducing the accuracy.

 

I will once again check your model and will update to you soon. 

 

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it's finally working.. i created a fake folder v14.0 with the same location. i will update to you soon if the model have no problem with braking analysis.

Ps: Thank you soo much for helping me

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it only works in a braking analysis, i want to perform cornering analysis, J turn analysis, accel analysis and other. And also to change parameters of braking analysis such as deceleration. How can i do it?

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