A new adaptive remeshing scheme based on the sensitivity analysis of the SPR point wise error estimation

• Published in: Computer methods in applied mechanics and engineering Vol. 195; no. 4; pp. 462 - 478
• Main Author: Bugeda, G.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01-01-2006; Elsevier
• Subjects: Adaptivity; Computational techniques; Error estimation; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Mathematical methods in physics; Physics; Point wise error; Pollution error; Sensitivity analysis; Pollution error; Adaptivity; Sensitivity analysis; Error estimation; Point wise error; Point estimation; Error detection; Adjoint method; Adaptive method; Mesh generation; Optimization; Structural analysis
• ISSN: 0045-7825; 1879-2138
• DOI: 10.1016/j.cma.2004.10.015

This paper presents a formulation for the obtainment of the sensitivity analysis of a point wise error estimator with respect to the nodal coordinates using the adjoint state method. The proposed point wise error estimator is based on the SPR method.
The numerical accuracy of the presented sensitivity analysis has been tested by perturbing a mesh. The capability of the presented sensitivity analysis for the detection of pollution error has also been tested.
A new adaptive remeshing strategy based on the sensitivity analysis of the point wise error estimation has been developed and tested. This strategy produces very cheap meshes for the accurate evaluation of stresses at specific points.