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The Design and Experimental Device Study of Torsional Vibration Damper for Diesel Shafting

Author: WuXingXing
Tutor: ZhouRuiPing
School: Wuhan University of Technology
Course: Marine Engineering
Keywords: Torsional vibration Analog shafting Shock Absorber DC superimposed AC
CLC: TK422
Type: Master's thesis
Year: 2009
Downloads: 202
Quote: 4
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Abstract


Diesel Shafting running the inevitable presence of torsional vibration such harmful vibration often the machine is not working properly, Diesel Shafting fatigue failure can cause serious or even more serious, especially in the high-speed, high-pressure machine . Therefore, reducing the torsional vibration problems to be solved in the engine design and manufacture of the shaft and the actual running. In the the shafting design process, the general is to avoid the resonance speed by adjusting the design parameters. As for production molding diesel engine, installed in shafting torsional vibration damper is the main way to reduce the torsional vibration, its application has been very widely. Reasonably match the design torsional vibration damper to reduce torsional vibration amplitude, reduce torsional vibration hazards has a very important significance. At present, the domestic shock absorber design is basically relying on the empirical formula and theoretical calculations, due to the deviation of the design and manufacturing process, it is easy to reach the expected damping effect caused by the shock absorber design match. Therefore, a reasonable and effective way to design to match diesel engine shaft torsional vibration damper products and shock absorber damping effective test has important significance of engineering applications. This research work starting from the two aspects of the damper theoretical study and practical test device, mainly the following aspects: 1, based on conventional design steps using VB programming language developed shock absorber design software. Used to initially set the basic parameters of the shock absorber shock absorbers front and rear, and the installation of diesel engine shafting torsional vibration calculation and verification. 2, the first use of Pro / E to the geometric model of the shock absorber, and in accordance with the theoretical calculations to optimize the structural dimensions of the shock absorber. Followed by MSC finite element software, the shock absorber model strength analysis, thermal analysis and thermal coupling analysis, to be checked by analyzing the results of the shock absorber strength. 3, designed torsional vibration excitation systems, the use of a DC motor instead of a diesel engine as the prime mover and excitation source, through the design of the drive circuit and energizing circuit periodic excitation of the motor of the diesel engine simulation. 4, design simulation torsional vibration shafting, by adjusting shafting inertia to adjust the natural frequency of the analog shafting to simulate the different frequencies of the running of the diesel engine shafting. 5, designed shock absorber test bench, diesel engine shafting torsional vibration simulation test damper damping and shock absorber damping effect. This study shows that: through model optimization of CAD software and the strength of the finite element software, you can easily and effectively optimize the design parameters. The test bench motor shafting analog diesel engine shafting, under the control of the design of the circuit, motor shafting can better achieve the simulation of Diesel Shafting, in turn, can facilitate the actual shock absorber test.

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CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > Diesel engine > Design, calculation
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