Flexible body modeling - Curves problem

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A 
 I have created a model with rigid bodies and the kinematics/kinetics are working fine. Then, when I add my flexible model (for one body of the model), there is a bug. All the curves that defined the motion of each joints are all offset in Y axis. All those curves are forced to start at Y = 0. My kinematics is then all messed up.  The work around that I have found is to put the rigid model in its initial position (at time = 0 ), but I don't like it because it is difficult to define the joints axis.  Have you heard of this problem before ?  Thank you  Benjamin
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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited May 2016

    Could you share us your .mdl file or xml file?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016
    Altair Forum User said:

    All the curves that defined the motion of each joints are all offset in Y axis.

     

     

    Were these curves defined for Rigid bodies before you input flexible body?

     

    What are the curves about?

     

    Usually the initial velocity defined for rigid bodies takes CM marker as reference but for flex bodies this is not the case. GCS is taken into consideration instead.

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