Results 91 to 100 of about 135 (114)
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Experimental and Numerical Analyses of Radial Turbine Blisks With Regard to Mistuning
Volume 6: Structures and Dynamics, Parts A and B, 2011The effect of blade frequency mistuning on the forced response of integral radial turbines is studied by means of experimental and numerical analyses. Blade dominated frequencies representing the mistuning are identified based on blade by blade measurements using the example of a MTU ZR140 turbine blisk. Based on these results, numerical simulations of
Peter Ho¨nisch +2 more
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Mistuning and Damping Analysis of a Radial Turbine Blisk in Varying Ambient Conditions
Volume 7B: Structures and Dynamics, 2014A mistuned radial turbine impeller is analyzed with respect to the impact of varying ambient pressures and temperatures as well on frequency response functions and modal damping ratios. Beginning at room conditions, a finite element model of an impeller wheel at rest is updated based on experimentally determined mistuning in terms of blade dominated ...
Bernd Beirow +2 more
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Flank milling model for tool path programming of turbine blisks and compressors
International Journal of Production Research, 2014In this paper, a methodology for complex surface machining based on cutting forces prediction is presented. The work is focused on blade finishing operations. The cutting forces model developed can be applied to three axis and five axis milling cases. For three-axis cases, the chip thickness is calculated according to traditional analytical methods. On
A. Calleja +6 more
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Volume 7A: Structures and Dynamics, 2017
One key engine component that defines the main engine characteristics is the wheel of a high-pressure turbine. One reasonable approach for increasing the efficiency of this type of turbine is to use blade shrouding. However, this shrouding also increases the centrifugal loading on the profile part of the blades, the lock connection, and the disk.
Liubov Magerramova +3 more
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One key engine component that defines the main engine characteristics is the wheel of a high-pressure turbine. One reasonable approach for increasing the efficiency of this type of turbine is to use blade shrouding. However, this shrouding also increases the centrifugal loading on the profile part of the blades, the lock connection, and the disk.
Liubov Magerramova +3 more
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Study on Mistuning Identification of Vehicle Turbocharger Turbine BLISK
Volume 1B: Marine; Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, 2014Blade vibration is one of the most critical items to be solved in turbocharger design. Turbocharger has much broader operating range than other turbo machinery and some unavoidable resonance may remain in operating range. In such a critical situation, predicting resonant vibration level is desirable for evaluating criticality.
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A special CAD/CAM software for electro-discharge machining of shrouded turbine blisks
Journal of Shanghai University (English Edition), 2007In this paper, a special-purpose CAD/CAM software package, BliskCad/Cam, based on a commercial CAD/CAM software Unigraphics is developed to reduce difficulties in CNC-EDM of the shrouded turbine blisks. The software package consists of five modules such as electrode design, path searching, and machining simulation module.
Gang Li +3 more
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Reconditioning gas turbine blisks by electron beam welding a repair insert
Welding International, 2014A method of reconditioning gas turbine blisks using electron beam welding of a repair insert has been developed.
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2D Elementary Geometric Decomposition to Study Flutter Motion of a Space Turbine Blisk
Volume 6: Structures and Dynamics, Parts A and B, 2009Within the framework of aerospace turbines, an isolated integral bladed disk is examined. The blisk presents very high eigenfrequencies with complex deformations of the blades. A 3D steady RANS computation is at first performed with the aim of characterizing the subsonic flow.
Hakim Ferria +5 more
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Measuring and presetting system for tool electrodes used for machining rimmed turbine blisks
Transactions of the Institute of Measurement and Control, 2016The aim of the study is to develop a measuring and presetting system for tool electrodes used for machining rimmed turbine blisks. A data-sampling method based on voltage monitoring was established as the foundation of this study. The proposed system, which consisted of three parts (mechanical, electric control and computer numerical control system ...
Haipeng Huang +4 more
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2017
Рассмотрены вопросы аналитического расчета производительности процессов механической обработки поверхностей моноколес компрессоров и турбин газотурбинных двигателей. Получены и унифицированы по иерархии аналитические выражения для расчета штучного времени обработки и потенциального роста производительности в зависимости от вида схемы технологического ...
Sorokin, V.F., Ternyuk, I.O.
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Рассмотрены вопросы аналитического расчета производительности процессов механической обработки поверхностей моноколес компрессоров и турбин газотурбинных двигателей. Получены и унифицированы по иерархии аналитические выражения для расчета штучного времени обработки и потенциального роста производительности в зависимости от вида схемы технологического ...
Sorokin, V.F., Ternyuk, I.O.
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