Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Lars Panning-von Scheidt"'
Publikováno v:
International Journal of Turbomachinery, Propulsion and Power, Vol 8, Iss 4, p 38 (2023)
In this work, the vibration response of an academic free-standing turbine blisk is analyzed in regard to transient resonance passages. Measurement data are recorded using strain gauges and tip timing to evaluate the blades first bending mode both lin
Externí odkaz:
https://doaj.org/article/9f9967449e214e8bad278f1e94acd24d
Publikováno v:
Journal of the Global Power and Propulsion Society 7 (2023)
Journal of the Global Power and Propulsion Society
Journal of the Global Power and Propulsion Society
To assess the influence of mistuning on the vibration amplitudes of turbomachinery rotors, reduced order models (ROMs) are widely used. A variety of methods are available for single-stage configurations and mostly aeroelastic effects can be taken int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4385fc391a7970af8e970584c4d0b38
https://doi.org/10.33737/jgpps/161707
https://doi.org/10.33737/jgpps/161707
Autor:
Niklas Maroldt, Joerg R. Seume, Lukas Schwerdt, Lars Panning von-Scheidt, Jörg Wallaschek, Ricarda Berger, Raimund Rolfes
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 144
Vibration amplitudes and fatigue life in multistage turbomachinery are commonly estimated by an isolated investigation of the individual stages. Research is currently extending the scope to include inter-stage coupling of structural dynamics and aero
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68b780ebac1cdd76ae3d45fde000c20b
https://doi.org/10.1115/1.4055368
https://doi.org/10.1115/1.4055368
Publikováno v:
Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration.
Stochastic excitation is a rarely discussed topic regarding the vibrational behavior of turbine blades. While the calculation of stochastic quantities describing the stochastic steady-state vibration response is comparatively straightforward in the l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::149122ed6f87b8d6753cbefab0507221
https://doi.org/10.1115/gt2022-78367
https://doi.org/10.1115/gt2022-78367
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 144
Casings of machinery and support structures have an influence on the rotordynamic behavior, which is commonly considered by simplified models (e.g., one degree-of-freedom models). These are in many cases insufficient. Hence, more accurate modeling ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::765d29addeeb0e8f3cf408b6732911db
https://doi.org/10.1115/1.4053123
https://doi.org/10.1115/1.4053123
Publikováno v:
Nonlinear Dynamics. 99:1841-1870
Two novel methods to determine detached periodic solution branches of low-dimensional and large-scale friction-damped mechanical systems have been developed. The approach for low-dimensional systems is an extension of the global terrain method and co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2de8e158d01fa62b6637ebd5a6ebd548
https://doi.org/10.1007/s11071-019-05425-4
https://doi.org/10.1007/s11071-019-05425-4
Validating simulation results of vibrating turbine blades relies on measurements of realistic or academic cyclic structures on special test rigs. In real operation the blades are excited mainly by aerodynamic forces. For measurements of blade vibrati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b293b2b894497c49d73700f1b80695e0
https://doi.org/10.1115/1.0005142v
https://doi.org/10.1115/1.0005142v
Publikováno v:
Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration.
Constructive damper concepts are developed and integrated in turbomachinery to reduce vibration amplitudes generated by dynamic loads. The potential damping effectiveness of friction-based damper concepts is strongly dependent on the relative motion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2df527b52d46d2df8f7cb372d420bc3d
https://doi.org/10.1115/gt2021-59272
https://doi.org/10.1115/gt2021-59272
Publikováno v:
Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration.
Turbomachines experience a wide range of different types of excitation during operation. On the structural mechanics side, periodic or even harmonic excitations are usually assumed. For this type of excitation there are a variety of methods, both for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8bc9b5a7abb3f68bc291a3182cc7a23
https://doi.org/10.1115/gt2021-58437
https://doi.org/10.1115/gt2021-58437
Publikováno v:
Mechanical Systems and Signal Processing. 127:159-171
For the determination of periodic solutions for forced or free vibrations of nonlinear systems, several proven methods exist. The motion of autonomous nonlinear non-conservative mechanical systems is in general non-periodic which contradicts the comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc53d39aa6caa0ec084ff463a9c5da28
https://doi.org/10.1016/j.ymssp.2019.03.005
https://doi.org/10.1016/j.ymssp.2019.03.005