Numerical Simulation of Vibration and Structural Born Noise Analysis of Industrial Gearbox
Akilesh M1, Kathiresan Ganesan2, Soundararajan R3, Dinesh G4, Abhay Charan5
1M. Akilesh, UG Student, Department of Mechanical Engg, Sri Krishna College of Engineering and Technology, Coimbatore (TN), India.
2G. Kathiresan, Head in Engineering and R&D, Shanthi Gears Limited, Coimbatore (TN), India.
3R. Soundararajan, Associate Professor, Department of Mechanical Engg, Sri Krishna College of Engineering and Technology, Coimbatore (TN), India.
4G. Dinesh, UG Student, Department of Mechanical Engg, Sri Krishna College of Engineering and Technology, Coimbatore (TN), India.
5V. Abhay Charan, UG Student, Department of Mechanical Engg, Sri Krishna College of Engineering and Technology, Coimbatore (TN), India.
Manuscript received on 05 May 2019 | Revised Manuscript received on 12 May 2019 | Manuscript published on 30 May 2019 | PP: 608-614 | Volume-8 Issue-7, May 2019 | Retrieval Number: G5465058719/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Unchecked vibrations can generate noise, accelerate rates of wear, cause safety glitches, resulting in low efficiency and at times a costly failure in mechanical components. Just like gear and shafts, the gearbox casing is a vital transmission component. So, while designing, the gearbox casing strength is a significant parameter to consider. The reasons for vibrations are external disturbances, load fluctuations, transmission faults, gear mesh stiffness and many other reasons. Therefore, it is vital to estimate and settle the limits of vibrations and noise in designing stage using Finite Element Analysis (FEA). This paper comprises dynamic analysis and Structural born noise calculation for a single stage helical gearbox casing by employing Finite Element Analysis. Using SOLIDWORKS the 3D model of gearbox was prepared and using ANSYS 18.1 software finite element simulation was done. To forecast the natural frequencies and dynamic responses of the system for the excitation frequencies and its harmonics, Modal and Harmonic analysis was carried out. The estimation of natural frequencies of the gearbox casing in Modal analysis aids in keeping the natural frequency away from resonance frequencies. The magnitude of the natural frequencies of the gearbox is estimated using Harmonic analysis. The results of harmonic analysis were used as input for acoustic study and the Structural Born Noise (SBN)was measured. Obtained noise values are well within the limits and the design was verified.
Keyword: Frequencies, Structural Born, Element Simulation
Scope of the Article: Solid and Structural Mechanics