A stable node-based smoothed finite element method for acoustic problems
We present a stable node-based smoothed finite element method for acoustic analysis. The SNS-FEM can greatly reduce the dispersion error for high wave number problems. The present formulation has higher precision and faster convergence rate. Higher computational efficiency can be obtained by employing the SNS-FEM. The developed methodology works well even for extremely distorted meshes.
acoustic numerical methods node-based smoothed finite element method (ns-fem) temporal stability discretization error