Abstract
We introduce a stabilised finite element formulation for the Kirchhoff plate obstacle problem and derive both a priori and residual-based a posteriori error estimates using conforming C1 -continuous finite elements. We implement the method as a Nitsche-type scheme and give numerical evidence for its effectiveness in the case of an elastic and a rigid obstacle.
| Original language | English |
|---|---|
| Pages (from-to) | 97-124 |
| Journal | BIT Numerical Mathematics |
| Volume | 59 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 4 Mar 2019 |
| MoE publication type | Not Eligible |
Funding
Funding from Tekes (Decision No. 3305/31/2015), the Finnish Cultural Foundation, the Portuguese Science Foundation (FCOMP-01-0124-FEDER-029408) and the Finnish Society of Science and Letters is greatly acknowledged.
Keywords
- Obstacle problem
- Kirchhoff plate
- Stabilised FEM
- A posteriori estimate
- Nitsche’s method