Rbody Master on Elements Problem

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi,

 

I am trying to build a crash model of a bus. As a beginner, I defined all the connections between the parts with RBE2's using Hypermesh with Block110. When I imported the model to Hypercrash, it shows errors on modelchecker for my rigid links: 'Rbody Master on elements'. When I defined the failed rigids again by using 'calculate node' option the is problem fixed, however I have 3700 failed rigids at my model. Are there any easy way to fix this or I should update all 3700 rigids one by one?

 

Thank you all in advance for the answers.

 

 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2013

    Hi,

     

    i don't use Hypercrash, but i have found the following description in the Hypercrash help file:

     

    Error:

    Number of master nodes on structures. Non-free master node of rigid body. A rigid body master node must not be part of an element.

     

    Correction:

    Open page, Mesh-Editing / Rigid Body / Modify

     

     

    It sounds like your error.

    It means you have createt RBodys with the master node on a structural element. Maybe it is not allowed.

    it seems there is no automatic fix up. Please contact the Altair hotline...

     

    Regards,

    Mario

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2013

    Thank you Mario.

  • tinh
    tinh Altair Community Member
    edited July 2013
    Altair Forum User said:

    Hi,

     

    I am trying to build a crash model of a bus. As a beginner, I defined all the connections between the parts with RBE2's using Hypermesh with Block110. When I imported the model to Hypercrash, it shows errors on modelchecker for my rigid links: 'Rbody Master on elements'. When I defined the failed rigids again by using 'calculate node' option the is problem fixed, however I have 3700 failed rigids at my model. Are there any easy way to fix this or I should update all 3700 rigids one by one?

     

    Thank you all in advance for the answers.

    Hi

    to convert RBE style to calculated master node, run this script

    *createmarkpanel elems 1 'select rbe2 elements'

    *createmark elems 2 'by config' rigid rigidlink

    *markintersection elems 1 elems 2

    foreach elemid [set elemlist [hm_getmark elems 1]]  {

    set nodelist [hm_nodelist $elemid]

    eval *createmark nodes 2 $nodelist

    *rigidlinkinodecalandcreate 2 0 0 123456

    }

    eval *createmark elems 1 $elemlist

    *deletemark elems 1

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2016

    Could some have fixed this error message :

     

    error decomp RBE2           0           3
     error decomp RBE2           0           2
     error decomp RBE2           0           1

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

    Could you share the out file of the run?

     

    Regards

    Rahul R

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