3D shells are always plane stress and the plane strain option is disabled.
2D continuum elements are plane stress by default and you can change it to plane strain by turning that option on. It should be enabled if the Shell/membrane material type is.
If that doesn't help, can you say what analysis type and solver you're using? Or post a copy of the .liml file.
Comments
3D shells are always plane stress and the plane strain option is disabled.
2D continuum elements are plane stress by default and you can change it to plane strain by turning that option on. It should be enabled if the Shell/membrane material type is.
If that doesn't help, can you say what analysis type and solver you're using? Or post a copy of the .liml file.