an encyclopedia of finite element definitions
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| Alternative names | Tangential-displacement normal-normal-stress |
| Abbreviated names | TDNNS |
| Degrees | \(1\leqslant k\) |
| Reference cells | triangle, tetrahedron |
| Definition | This is a mixed element containing these subelements:
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| Categories | Mixed elements |
| Element added | 21 December 2022 |
| Element last updated | 04 June 2025 |