29 citations · 82 across the 6 of their papers we have counts for
6 papers
Fully Coupled Forced Response Analysis of Nonlinear Turbine Blade Vibrations in the Frequency Domain
Christian Berthold, Johann Gross, Christian Frey +1
For the first time, a fully-coupled Harmonic Balance method is developed for the forced response of turbomachinery blades. The method is applied to a state-of-the-art model of a tu…
Computational and experimental analysis of the impact of a sphere on a beam and the resulting modal energy distribution
Felix Gehr, Timo Theurich, Carlo Monjaraz-Tec +4
We consider the common problem setting of an elastic sphere impacting on a flexible beam. In contrast to previous studies, we analyze the modal energy distribution induced by the i…
Nonlinear damping quantification from phase-resonant tests under base excitation
Florien Müller, Lukas Woiwode, Johann Gross +2
The present work addresses the experimental identification of amplitude-dependent modal parameters (modal frequency, damping ratio, Fourier coefficients of periodic modal oscillati…
A massless boundary component mode synthesis method for elastodynamic contact problems
Carlo Monjaraz-Tec, Johann Gross, Malte Krack
We propose to combine the ideas of mass redistribution and component mode synthesis. More specifically, we employ the MacNeal method, which readily leads to a singular mass matrix,…
Development of a Fully-Coupled Harmonic Balance Method and a Refined Energy Method for the Computation of Flutter-Induced Limit Cycle Oscillations of Bladed Disks with Nonlinear Friction Contacts
Christian Berthold, Johann Gross, Christian Frey +1
Flutter stability is a dominant design constraint of modern gas and steam turbines. To further increase the feasible design space, flutter-tolerant designs are currently explored,…
Effects of modal energy scattering and friction on the resonance mitigation with an impact absorber
Timo Theurich, Johann Gross, Malte Krack
A linear vibration absorber can be tuned to effectively suppress the resonance of a particular vibration mode. It relies on the targeted energy transfer into the absorber within a…