Determination of the Load Bearing Capacity of Composite Flanges for Aircraft Engine Casing Application: General Methodology and Design of Testing Devices Supported By Simulation
The context of this paper is the verification of the load bearing capacity of composite flanges used in engine aircraft components. These flanges are considered as important details of the full composite casing and are therefore studied at a specific stage of the pyramid of tests, the goal being to determine, by tests and simulation, their structural behavior and establish the material allowables that will be used later in the sizing process at the casing level. Seeing the particular shape of the flanges and the different loading scenarios, specific tooling devices are designed to be adapted on standard testing machines. Finite element models are used to support the development of the tooling. In this paper, the test campaign is described, and the methodology used for designing the tooling for the testing is explained. It is shown how, from the coupon level, the material properties of the composite are determined, not only for the linear but also for the non-linear behavior including damage and plasticity properties. This information is used in a set of finite element models of different fidelity levels that are used to estimate the load capacity of the composite flanges. The prediction of the load capacity is then used in a finite element model to validate the design of the developed specific testing tooling devices. As the test campaign on the flanges is still running when writing this paper, the results on the physical tests are not reported here, but will be presented at the conference and in future articles.
Authors: M. Bruyneel, B. Crevits, Olivier R., C. Vroomen, E. Racle, T. Germain, J. Gallais, D. Verhelst
Conference: SAMPE Europe Conference 2016