EFFEKT - Further development of virtual test procedures for sandwich structures in aircraft cabins

 

Motivation

Due to their very good weight-specific material properties, sandwich structures with honeycomb cores are often used in aircraft cabin monuments. Among other things, these exhibit complicated failure behavior due to the anisotropic material behavior of the constiuents and the layered structure. For this reason, a considerable amount of testing is required to determine the system behavior of the sandwich structure. However, this large number of real tests results in high costs in the product development process.

Objective

The aim of the EFFEKT project is to further develop existing virtual test procedures based on the finite element method (FEM). The numerical models created should be able to adequately reproduce the behavior of the sandwich structure including the occurring failure mechanisms in the tests at component and substructure level and thus lead to a reduction of the high real testing effort.

                            

Research Method

In order to build up corresponding numerical models, a virtual test procedure for sandwich structures with honeycomb cores developed at the PKT is being further developed. The approach is based on the so-called building block approach, in which synergetic effects from simulation and testing are used. Based on a hierarchical structure, numerical models are first created at lower levels of structural complexity and validated by means of real tests. These findings are successively transferred to higher structural complexity levels, such as the component and substructure levels. Real tests are again performed at these levels to validate the models and further improve them based on new findings.

                    

                                             

Project Organisation

Project Lead: Prof. Dr.-Ing. Dieter Krause

Project Execution: Lukas Schwan, M.Sc.

The project is part of the Field of Application Aviation.

Funding and Partners

The project is funded by the Federal Ministry for Economical Affairs and Energy (BMWi) as part of the sixth Federal Aeronautical Research Programm (LUFO VI-1). 

The project is being carried out in cooperation with Diehl Aviation.