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MBD analysis error by flexible bodies

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Hi,


 


As soon as I change in an MDB analysis the body properties from rigid to flexible, I got error messages.


 


I uploded my example models to:   https://ftin.india.altair.com:8443/filedrop/


 


test_zusammenbau_zyl_2_rbody.fem : all rigids, it's OK


 


test_zusammenbau_zyl_2_fbody_1.fem:   $HMNAME GROUP                  1"kolben" "PFBODY", with error


 


test_zusammenbau_zyl_2_fbody_3.fem     $HMNAME GROUP                  4"pleuel" "PFBODY"


                                                                     $HMNAME GROUP                  3"hebel" "PFBODY",  with error


 


 


Thank you and best regards,


 


Szilard Balazs


 


 


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Guest

Hi,


 


The problem is with the tetra elements. It may not be possible to get corner stress for tria/tetra elements.


 


Change it to  center instead and you should be able to run the model.


 


My suggestion would be use QUAD/HEXA elements instead of tria/tetra elements and request corner stress.


 


Thanks and Regards


 


Prakash Pagadala | Altair Engineering


 


 


 


 


An another thing is, that each MDB analysis must to run in a separate directory...


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