A Posteriori Error Estimation via Equilibrated Stress Reconstruction for Unilateral Contact Problems

== Summary ==

We present an a posteriori error estimation based on a equilibrated H(div)-conforming stress reconstruction for unilateral contact problems without friction, discretized with a Nitsche-based method. The stress reconstruction is obtained via local Neumann problems constructed on Arnold-Falk-Winther mixed finite element spaces, and it is used to compute some local and global estimators which separate the different components of the computational error. These local estimators provide a method to adaptively refine the mesh.

== Video ==
{{#evt:service=cloudfront|id=257302|alignment=center|filename=439.mp4}}
                                                
== Document ==
<pdf>Media:Draft_Content_565301769A_IDC6_439.pdf</pdf>