Stress and vibration analysis of meshed gears by finite element analysis

Gears are mechanical components that transmit torque and rotational motion from one machine part to another. They are widely used in a variety of machines including automotive and industrial machinery. Some common types of gears include spur gears, helical gears, bevel gears, worm gears, and rack an...

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Main Author: Ong, Jimmy Pin Ren
Other Authors: Sellakkutti Rajendran
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2023
Subjects:
Online Access:https://hdl.handle.net/10356/166834
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1668342023-05-13T16:51:16Z Stress and vibration analysis of meshed gears by finite element analysis Ong, Jimmy Pin Ren Sellakkutti Rajendran School of Mechanical and Aerospace Engineering MSRajendran@ntu.edu.sg Engineering::Mechanical engineering Gears are mechanical components that transmit torque and rotational motion from one machine part to another. They are widely used in a variety of machines including automotive and industrial machinery. Some common types of gears include spur gears, helical gears, bevel gears, worm gears, and rack and pinion gears. Each type of gear has their own unique characteristics, making it suitable for different applications. Spur gears are the most commonly used in industry as it is easy to manufacture and has high efficiency in transmitting power and torque. In this final year project, spur gear is used for analysis. The maximum von-Mises stress at the tooth contact, displacement of the center of pinion shaft and center of gear shaft, and natural frequency of spur gear assembly are studied using finite element analysis. The software ANSYS Workbench 2022 R1 academic version is used. A 3D model of meshed spur gear is built and subjected to static torsion loading. Mesh refinements are carried out at the tooth of the gear as well as at the shaft body. Parameters such as length of shaft and applied torque are varied to see how they affect the three results as mentioned above. The mode shapes are also studied to see how gears vibrate at various frequencies. It is observed from the results that as the length of the shaft is shortened, the displacement of the center of both shafts decreases and the natural frequency increases. The maximum von-Mises stress at the tooth contact does not have a relationship as it increases and decreases non-uniformly when the length is decreased. Next, when the torque applied at the input shaft increases, the maximum von-Mises as well as the displacement of the center of the shafts increases. The natural frequency is not affected by the increase in torque as it remains almost constant. Bachelor of Engineering (Mechanical Engineering) 2023-05-10T00:32:09Z 2023-05-10T00:32:09Z 2023 Final Year Project (FYP) Ong, J. P. R. (2023). Stress and vibration analysis of meshed gears by finite element analysis. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/166834 https://hdl.handle.net/10356/166834 en B212 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
spellingShingle Engineering::Mechanical engineering
Ong, Jimmy Pin Ren
Stress and vibration analysis of meshed gears by finite element analysis
description Gears are mechanical components that transmit torque and rotational motion from one machine part to another. They are widely used in a variety of machines including automotive and industrial machinery. Some common types of gears include spur gears, helical gears, bevel gears, worm gears, and rack and pinion gears. Each type of gear has their own unique characteristics, making it suitable for different applications. Spur gears are the most commonly used in industry as it is easy to manufacture and has high efficiency in transmitting power and torque. In this final year project, spur gear is used for analysis. The maximum von-Mises stress at the tooth contact, displacement of the center of pinion shaft and center of gear shaft, and natural frequency of spur gear assembly are studied using finite element analysis. The software ANSYS Workbench 2022 R1 academic version is used. A 3D model of meshed spur gear is built and subjected to static torsion loading. Mesh refinements are carried out at the tooth of the gear as well as at the shaft body. Parameters such as length of shaft and applied torque are varied to see how they affect the three results as mentioned above. The mode shapes are also studied to see how gears vibrate at various frequencies. It is observed from the results that as the length of the shaft is shortened, the displacement of the center of both shafts decreases and the natural frequency increases. The maximum von-Mises stress at the tooth contact does not have a relationship as it increases and decreases non-uniformly when the length is decreased. Next, when the torque applied at the input shaft increases, the maximum von-Mises as well as the displacement of the center of the shafts increases. The natural frequency is not affected by the increase in torque as it remains almost constant.
author2 Sellakkutti Rajendran
author_facet Sellakkutti Rajendran
Ong, Jimmy Pin Ren
format Final Year Project
author Ong, Jimmy Pin Ren
author_sort Ong, Jimmy Pin Ren
title Stress and vibration analysis of meshed gears by finite element analysis
title_short Stress and vibration analysis of meshed gears by finite element analysis
title_full Stress and vibration analysis of meshed gears by finite element analysis
title_fullStr Stress and vibration analysis of meshed gears by finite element analysis
title_full_unstemmed Stress and vibration analysis of meshed gears by finite element analysis
title_sort stress and vibration analysis of meshed gears by finite element analysis
publisher Nanyang Technological University
publishDate 2023
url https://hdl.handle.net/10356/166834
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