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Rbody Master on Elements Problem

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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Altair Forum User

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

Thank you Mario.

tinh

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.

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

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

Could you share the out file of the run?

Regards

Rahul R