Implements 2D linear triangular three-node finite element for FreeWarping analysis. Each node has 1 degree of freedom. The node numbering is anti-clockwise. The element features are summarized in Table 43.
| Keyword | TrWarp |
| Description | 2D linear triangular warping element |
| Specific parameters | - |
| Unknowns | One dof (the value of deplanation function) is required in each node. |
| Approximation | Linear approximation of displacements and geometry. |
| Integration | Integration using one point gauss integration formula. |
| Features | This type of element is supported in FreeWarping analysis only. |
| CS properties | Only warpingCS is supported. |
| Loads | Edge loads corresponding to free warping problem are generated automatically. Additional edge loads are not supported. |
| Nlgeo | 0. |
| Status | - |
| Note | Test case: sm/freewarpingtest2.in |