Reduced Order Models for Static and Dynamic Analysis of Composite Panels Based on a Perturbation Approach

An overview of a specific reduced order modelling technique for Finite Element nonlinear buckling analysis of structures under static and dynamic loading is presented. The reduction method applied makes use of an available, well-established analytical perturbation procedure for static buckling and dynamic buckling analysis. This procedure has in the past years been used as the foundation for the development and implementation of a Finite Element framework for reduced order nonlinear buckling analysis. These achievements are reported, including a concise description of the underlying theory and certain characteristic examples. A basic example of a composite plate and other examples related to aircraft applications demonstrate the capabilities of this reduced order modelling framework for nonlinear buckling and dynamic response analysis and illustrate the current status of its development.