A summary of the differences between plane stress, plane strain and axisymmetric elements.
| Element | Plane stress | Plane strain | Axisymmetric |
|---|---|---|---|
| Required input geometric property | Thickness. | Thickness. | None. User should find out the angle of segment assumed by the FE software. |
| Assumptions | • σz=0 • εz=-v/E(σx+ σy) |
• εz=0 • σz=v(σx+ σy) |
Axisymmetric loading and structure. |
| Degree of freedom per node | Translations Ux, Uy |
Translations Ux, Uy |
Translations Ur, Uz |
| Stress output | σx, σy, σxy | σx, σy, σz, σxy | σr, σz, σrz, σθ |
| Strain output | εx, εy, εz, εxy | εx, εy, εxy | εr, εz, εrz, εθ |
Also see
Types of elements in the element library
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