بحث بعنوان Dynamic Vibration Analysis of Gear Box Casing Using ANSYS Software

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Dynamic Vibration Analysis of Gear Box Casing Using ANSYS Software
Ganesha.B1, Dr. K N Umesh2, G Raghavendra Setty3, Santhosh Naik4
Associate Professor, Dept. of Mechanical Engineering, Ballari Institute of Technology & Management, Bellary,
Karnataka, India. 1
Former Dean & Professor, Department of Mechanical Engineering, P E S College of Engineering, Mandya,
Karnataka, India. 2
Assistant Professor, Dept. of Mechanical Engineering, Ballari Institute of Technology & Management, Bellary,
Karnataka, India. 3
Jr. Manager, Central Maintenance Department, JSW Steel Ltd, Vijayanagar Works, Bellary, Karnataka. India. 4

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ABSTRACT: This technical paper contains the application of ANSYS software and also FFT analyzer to determine
natural frequency and mode shapes of industrial gearbox casing. In order to prevent the resonance of the gearbox casing
it is necessary to find the natural frequency and mode shapes. From the result, this analysis can show the range of the
frequency that is suitable for gearbox casing which can prevent maximum amplitude.
KEYWORDS: Gearbox casing, Natural frequency, Finite element analysis, ANSYS, Mode shapes, FFT Analyzer
CONCLUSION
The following solution is recommended, after the detailed dynamic analysis conducted on the gear box casing. Gearbox
casing was operating dangerously close to resonance, so dynamic analysis was carried to shift the natural frequencies of
the gear box casing. Different modification was tried and the best feasible modification is suggested to shift the natural
frequencies of the gearbox casing. The gearbox casing natural frequency of 4th gear meshing frequency 294.97 Hz is
shifted to 316.76 Hz by giving external stiffness. As a result of this modification the stiffness of the gear box casing is
increased and the natural frequency is shifted away from the resonance band

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