B
Bernhard Schweizer
Researcher at Technische Universität Darmstadt
Publications - 84
Citations - 1186
Bernhard Schweizer is an academic researcher from Technische Universität Darmstadt. The author has contributed to research in topics: Bearing (mechanical) & Reynolds equation. The author has an hindex of 18, co-authored 79 publications receiving 949 citations. Previous affiliations of Bernhard Schweizer include University of Kassel & University of Stuttgart.
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Total instability of turbocharger rotors—Physical explanation of the dynamic failure of rotors with full-floating ring bearings
TL;DR: In this paper, the stability of turbocharger rotors with full-floating ring bearings is investigated and a sound physical explanation of the total instability is given, which can be physically explained as synchronization of two limit cycles, namely, synchronization of the inner and outer oil whirl/whip of the floating ring bearings.
Journal ArticleDOI
Nonlinear oscillations of automotive turbocharger turbines
Bernhard Schweizer,Mario Sievert +1 more
TL;DR: In this article, an automotive turbocharger rotor is investigated, where the rotor is supported by full-floating ring bearings, which give rise to complex system vibrations, such as self-excited vibrations, oil whirl/whip phenomena, subharmonics, superharmonic, combination frequencies and jump phenomena.
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Dynamics and stability of turbocharger rotors
TL;DR: In this article, the bifurcation and stability behavior of turbochargers with full-floating ring bearings is investigated by means of simulated and measured rotor vibrations, and a flexible multibody model of the rotor/bearing system is presented.
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Oil whirl, oil whip and whirl/whip synchronization occurring in rotor systems with full-floating ring bearings
TL;DR: In this paper, a Laval (Jeffcott) rotor, which is symmetrically supported in full-floating ring bearings, is investigated by means of run-up simulations. And it is shown that total instability is caused by synchronization of two limit cycles, namely synchronization of the inner and outer oil whirl/whip.