@Article{CiCP-37-498, author = {Cai , YingGuo , Hailong and Zhang , Zhimin}, title = {Stabilized Continuous Linear Element Method for the Biharmonic Problems}, journal = {Communications in Computational Physics}, year = {2025}, volume = {37}, number = {2}, pages = {498--520}, abstract = {

In this paper, we introduce a new stabilized continuous linear element method for solving biharmonic problems. Leveraging the gradient recovery operator, we reconstruct the discrete Hessian for piecewise continuous linear functions. By adding a stability term to the discrete bilinear form, we bypass the need for the discrete Poincaré inequality. We employ Nitsche's method for weakly enforcing boundary conditions. We establish well-posedness of the solution and derive optimal error estimates in energy and $L^2$ norms. Numerical results are provided to validate our theoretical findings.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2023-0302}, url = {http://global-sci.org/intro/article_detail/cicp/23871.html} }