Within the design of transport aircraft wings the analysis of the static and dynamic structural properties is essential. Based on the section loads the permissible stresses are determined and the structure is dimensioned. Therein, widely linear methods are used in structural mechanical analysis. This is common practice for small deformations and de...
The design process for new aircraft configurations is complex, very costly and many disciplines are involved, like aerodynamics, structure, loads analysis, aeroelasticity, flight mechanics and weights. Their task is to substantiate the selected design, based on physically meaningful simulations and analyses. Modifications are much more costly at a ...
The objective of this thesis is to evaluate the impact of aeroacoustic rotor-stator interactions on forced blade vibrations. The focus is on blade vibrational stresses which are excited at the vane passing frequency of the downstream stator. To this end, results from unsteady pressure and tip timing measurements in the first stage of a 2.5-stage ax...
In this work the concept of a new time step control is developed for an adaptive flow solver to solve (a)synchronously (pseudo)transient problems of the fluid-structure interaction numerically robust while coupling the flow solver with a structure solver algebraically (partitioned coupling). By the analytically determined APRIORI time steps it faci...
Starting from a Finite-Volume Method solving the Navier-Stokes equations for compressible fluid flow and a Finite-Element Method based on quasi one-dimensional Timoshenko beam elements for structural dynamics, a numerical method for coupled aeroelastic problems of flight vehicles is developed. Using the method, extended aerodynamic stability deriva...
The direct numerical simulation of fluid-structure-interaction has received a lot of attention in recent years. Due to the growing size of planned commercial airplanes and the widespread use of lightweight-structures leading to large elastic deflections in flight, great interest of commercial applications of such simulation techniques has developed...
