Meshing errors
Meshing errors
(OP)
Hello all,
I am trying to conduct FE model of complex bone models (see http://www .eng-tips. com/viewth read.cfm?q id=284706& amp;page=1) and seem to facing some issues I believe due to the complex geometry, I try to make adjustments to part seeds, however, the following error message is obtained when I try to run the analysis...
***ERROR: The volume of 8 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. In the case of a tetrahedron this error may indicate that all nodes are located very nearly in a plane. The elements have been identified in element set ErrElemVolSmallNegZero.
Also for various nodes I have the following warnings
***WARNING: NODE 52 INSTANCE PART_1 ON SURFACE ASSEMBLY__PICKEDSURF10 HAS FACETS WITH NORMAL VECTORS DIFFERING BY MORE THAN 30 DEGREES. CONVERGENCE DIFFICULTIES MAY OCCUR AT THIS NODE WITH FINITE-SLIDING CONTACT. THE NORMAL CONTACT DIRECTION AT THIS NODE WILL BE (0.51820,-0.51820,-0.68039).
***WARNING: 71 elements are distorted. Either the isoparametric angles are out of the suggested limits or the triangular or tetrahedral quality measure is bad. The elements have been identified in element set WarnElemDistorted.
Does anyone have any input on solving these modelling issues, particularly the ERROR message.
Thanks
I am trying to conduct FE model of complex bone models (see http://www
***ERROR: The volume of 8 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. In the case of a tetrahedron this error may indicate that all nodes are located very nearly in a plane. The elements have been identified in element set ErrElemVolSmallNegZero.
Also for various nodes I have the following warnings
***WARNING: NODE 52 INSTANCE PART_1 ON SURFACE ASSEMBLY__PICKEDSURF10 HAS FACETS WITH NORMAL VECTORS DIFFERING BY MORE THAN 30 DEGREES. CONVERGENCE DIFFICULTIES MAY OCCUR AT THIS NODE WITH FINITE-SLIDING CONTACT. THE NORMAL CONTACT DIRECTION AT THIS NODE WILL BE (0.51820,-0.51820,-0.68039).
***WARNING: 71 elements are distorted. Either the isoparametric angles are out of the suggested limits or the triangular or tetrahedral quality measure is bad. The elements have been identified in element set WarnElemDistorted.
Does anyone have any input on solving these modelling issues, particularly the ERROR message.
Thanks





RE: Meshing errors
Tata
RE: Meshing errors
Thank-you very much for your input on this.
RE: Meshing errors
Can you please explain in detail how you solved this issue? I encountered the exact same error.
Your help with this is greatly appreciated.