نتایج جستجو برای: asymmetric shaft
تعداد نتایج: 76410 فیلتر نتایج به سال:
This paper presents theoretical models and simulation results for the synchronous, thermal transient, instability phenomenon known as the Morton effect. A transient analysis of the rotor supported by tilting pad journal bearing is performed to obtain the transient asymmetric temperature distribution of the journal by solving the variable viscosity Reynolds equation, a 2D energy equation, the he...
In the present study, an accurate model is used for analyzing asymmetric shaft with misalignment and under unbalance forces in rotating coordinates verified by developing experimental test.The rotor modeled Timoshenko beam theory coupled to a motor.The differential equations of motion are discretized Rayleigh-Ritz method derived from Hamilton's principle. Thereafter, According results, frequenc...
During animal development, cell fate diversity is generated in part by intrinsically asymmetric cell division, in which a mother cell divides to generate daughters of different developmental potential (Horvitz and Herskowitz, 1992). This process requires the coordination of two events: the mother cell must have an uneven distribution of cell-fate determinants and the mitotic spindle must be ori...
abstract background: fractures of the tibia are important for their commonness and controversy in their management. both conservative and surgical techniques have been introduced in an effort to speed time to :::::union::::: while minimizing the occurrence of complications. standard treatment for low-energy tibial shaft fractures includes closed reduction and cast immobilization. the purpose ...
Light Microscopy, Scanning and Transmission Electron Microscopy of Vertebrate Cerebellar Golgi Cells
The cerebellar Golgi cells of mouse, teleost fish, primate and human species have been studied by means of light and Golgi light microscopic techniques, slicing technique, ethanol-cryofracturing and freeze fracture methods for scanning electron microscopy and ultrathin sectioning for transmission electron microscopy. The Golgi cells appeared in the granular layer as polygonal, stellate, round o...
Turbo generator shafts are often subjected to cyclic torsion resulting in formation of large longitudinal cracks as well as circumferential cracks. The presence of these cracks could greatly impact the shaft resonance frequencies. In this paper, dynamic response of a shaft with longitudinal and circumferential cracks is investigated through a comprehensive analytical study. The longitudinally c...
in this paper, the effects of transverse cracks on rotating shaft were studied. according to earlier works, crack shaft failure decrease the critical speed of the shaft and also exhibit a nonlinear vibration behaviour leading to increases the amplitude of 1x and 2x harmonics (first and second order of rotational speed in torsional vibration). this suggests that the application of order analysis...
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