A Hybrid-Displacement POD-based finite element formulation: Application to a linear elastic perforated plate

Riveted assemblies play a crucial role in the strength and failure of aeronautical structures subjected to shock and impact. The finite element evaluation of stress concentrations in these zones necessitate accurate modeling of both the full-scale structure and the local assembly zone to evaluate the structure survivability. To address this challenge, an approach based on the modeling of the assembly zones using Hybrid-Trefftz Displacement super-elements was considered. However, the main drawbac