Project Details
Projekt
Vibration and vibroacoustic design for future integrated propulsion systems (C04)
Subject Area
Mechanics
Term
since 2023
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 498601949
In the project, the development of an efficient, accurate and predictive simulation method, which allows the detailed investigation of the effect of structural nonlinearity sources on cabin noise in future highly integrated aircraft is pursued. The structural transfer paths of vibration and noise in aircraft consist of many components, which are mechanically connected via e.g. rivets and bolts. Such mechanical joints are known to introduce significant vibration-amplitude-dependence of effective stiffness and damping at component interfaces, especially under increased vibratory response ranges of future aircraft designs. The Harmonic Balance method is capable of providing predictions for such cases but is computationally costly when used for acoustic purposes. To account for these challenges, a computational method combining the Harmonic Balance Method with ideas from Multi-Fidelity modelling is developed that is particularly suitable for predicting acoustic quantities.
DFG Programme
CRC/Transregios
Applicant Institution
Technische Universität Braunschweig
Project Heads
Dr.-Ing. Johann Groß; Dr.-Ing. Tobias Paul Ring
