Model Updating in Dynamic Finite Element for Damage Detection on an Aircraft Wing

Resumo

SHM is a fundamental area for aerospace engineering. Within this broad area, there are non-destructive ways to assess integrity. This paper presents an approach to damage detection through optimization of a finite element model, where the design variables are the characteristics of the sections forming the components of the structural system, and the objective function is the dynamic parameters: natural frequencies and modal shapes. This allows for the detection of damage that caused alterations in the modal parameters of the structure through an optimal combination of design variables that generate responses obtained in the modal analysis of the damaged structure once the model is calibrated. The practical application used is damage detection in a simplified model of an aircraft wing.