Torsional vibration
Adaptive parameter adjusting method for torsional vibration model of turbine shafts
... Torsional vibration model of turbine-generator shafts is the basic for fatigue life loss analysis, for the accuracy of the fatigue analysis of the shafts depends on the precision of the inherent ...
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Design and optimization of an aircraft propeller for tuned torsional vibration damping
... The described phenomenon concerns many aeronautical piston-engines. In the last years, it has been noted that torsional vibration problems can be avoided by using a GFRP (Glass Fiber Reinforced Plastic) ...
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Torsional Vibration Analysis of Pre Twist Cantilever Beam Using FEM V Kiranmayi & Mr K Bala Shankar
... Structures having the shape of blades are often found in several practical engineering examples such as turbines and aircraft rotary wings. For reliable and economic designs of the structures, it is necessary to estimate ...
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Long blade vibration model for turbine generator shafts torsional vibration analysis
... The torsional moment of inertia has been molded accurately enough and the damping coefficient has little influence on the torsional vibration inherent characteristics when adjusting the ...
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Shaft Torsional Vibration Response of Vertical Axis Ocean Current Turbine Model Due to Torque Excitation
... Shaft Torsional Vibration Response of Vertical Axis Ocean Current Turbine Model Due to Torque ...the torsional vibration response of Vertical Axis Ocean Current Turbine due to randomly torque ...
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ANALYSIS OF FREE TORSIONAL VIBRATION IN CARBON NANOTUBES EMBEDDED IN A VISCOELASTIC MEDIUM
... Also boron nitride nanotubes can be used in- stead of carbon nanotubes. Arani et al. studied nonlinear free vibration and instability of fluid- conveying double-walled boron nitride nanotubes (DWBNNTs) embedded in ...
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Torsional Vibration Analysis of Aluminium6061Sic Metal Matrix Composite
... Abstract- Structural members subjected to external load achieve extra strength by an initial permanent deformation. During the initial stages of elasto-plastic deformation, increasing stress is needed to cause plastic ...
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Diagnosis for Structural Health of Rotor Dynamic Systems: a Review
... the torsional test rig to extract the Torsional vibration signature (refer Figure ...The torsional vibration signature is used in conjunction with a crack characterization model to ...
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A General Calculating Method of Rotor’s Torsional Stiffness Based on Stiffness Influence Coefficient
... rotor’s torsional vibration with a given data format for different kinds of rotor automatically, and with high ...the torsional stiffness influence coefficient λ of equal thickness disc is fit to a ...
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Drive shaft, Composite Material, Fundamental Frequency, Modal Analysis
... Zhenguo Zhang et al. [1] have studied the self-excited vibration of a propeller shaft. The excitation is caused due to friction induced instability. The shaft is supported on rubber bearing lubricated by water. ...
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The Modal Analysis of Vibro Ripper Gear based on CATIA
... folding vibration, torsional vibration, circumferential vibration, step 3 bending vibration, radial vibration and compared with modal characteristic in rotation, we infer that ...
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... on torsional vibration of a micro-shaft was ...and torsional vibration of the micro-shaft based on non-local elasticity theory were ...
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Crankshaft Design Methodology for Diesel Engines
... ABSTRACT: The crankshaft is one of the most critically loaded components as it experiences cyclic loads in the form of bending and torsion during its service life. Its failure will cause serious damage to the engine so ...
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A New Differential Operator Method to Study the Mechanical Vibration
... A very serious equipment accident occurred in 1982 in a certain factory in the iron and steel industry in Jinan, China, where the safety pin of the middle plate of a three-roll mill for mechanical protection was not ...
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DYNAMIC MODELING AND VIBRATION ANALYSIS OF A BALL-SCREW DRIVE SYSTEM
... Here is the travel length of the table and T is the total travel time. Since the table is accelerating and decelerating during its motion, rotating screw will experience a force because of the table inertia. The screw is ...
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Torsional ultrasound mode versus combined torsional and conventional ultrasound mode phacoemulsification for eyes with hard cataract
... Descriptive data regarding phaco parameters: UST, CDE, and %TUSiP3 are illustrated in Table 4. Statistical analysis was done using the independent sample t-test. Comparing UST for both groups revealed statistically ...
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Research on Homogenization and Surface Integrity of Ti-6Al-4V Alloy by Longitudinal-Torsional Coupled Ultrasonic Vibration Ball-End Milling
... ultrasonic vibration assisted ball-end ...ultrasonic vibration assisted ball-end precision milling, during this process, it is not necessary to exchange the cutting ...ultrasonic vibration-assisted ...
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SafetyNET Community-based patient safety initiatives: development and application of a Patient Safety and Quality Improvement Survey
... local vibration does seem to induce beneficial changes in outcome measures such as muscle activation / stimulation, muscle strength, muscle power, and joint flexibility / range of ...local vibration therapy ...
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Explaining system behaviour in radar systems
... The main problem here lies in the type of data that was used as an input for the di- agnosis. In the reviewed literature it often concerned either vibration data or image data. In the case of Thales the data ...
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Torsional Irregularity of Building
... of Torsional Irregularity In Irregular Structure Provided With Lead Rubber Bearing Isolator”,International Journal Of Engineering Science And Computing, Volume:7, Issue:6, pp:267-271, ...
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