Before any calculations are performed, I get the following error after pressing the calculate button: Element 1808’s volume <=0; stop
However, if I examine the model, I see that element 1808 seems to have a surface. Since it’s a 2D model, I’m not sure about a volume.
A portion of the model was obtained by copying its left portion (using the “Mirror— option). Could this be the cause of the negative volume of the elements in the right section?
Do you have any suggestions on how to address this issue or identify its root cause?
Thanks a lot!
Which calculation code is raising this message?
In any case, probably expects the 2D surfaces and its mesh elements with normal pointing to +Z
and if you have created half part with a mirror its normal will be opposite, pointing to -Z
and then the Jacobians (volume or area in 2D) become negative
You must simply set the normals properly: can draw it with some tools of
View->normals
and can swap some with
Utilities->Swap normals
Must se the normals of the geometry, and generate again the mesh (the elements will inherit the orientation of its source geometry)