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Author: Gitin M. Maitra Publisher: McGraw-Hill Professional Publishing ISBN: 9780074602379 Category : Gearing Languages : en Pages : 0
Book Description
This new edition provides extensive information to designers on various aspects of gears and gearing systems. Very comprehensive in its coverage, the handbook contains enough tables, illustrative examples and diagrams to enable designers arrive at quick solutions for their problems. The handbook is based on ISO specifications and is a unique blend of practical as well as the theoretical aspects of gear designs. The new edition includes more on spiral bevel gears, arcoid gears, klingelnberg, and gleason systems and gear tooth checking.
Author: Venkata Satya Naga Karthik Bommisetty Publisher: ISBN: Category : Finite element method Languages : en Pages : 74
Book Description
A Finite Element procedure has been developed in this work to determine the load distribution factor, Km, of the AGMA formula for a set of spur gear. At first, a spur gear with perfect involute is modeled using a 3-D CAD software. The model is them is assembled with shafts having 1, 2, and 3 degree misalignments. The generated 3-D models were in turn imported to ANSYS workbench to calculate the maximum bending and contact stresses using finite element method. The results generated were then compared with the maximum bending stress results obtained for parallel shafts to estimate the Load Distribution Factor Km. This study resulted in Km values of 1.03,1.11, and 1.14.
Author: Gagandeep Singh Publisher: ISBN: Category : Gearing Languages : en Pages : 0
Book Description
This thesis evaluates the service life of the spur gear in industry, showing that innovative techniques are required to resolve the problem of gear failure that occurs due to flank surface pitting and tooth breakage. Such techniques involve theoretical calculation, finite element analysis, hardness testing and selecting the appropriate material for the spur gear. The aim of the research was to increase the service life of the spur gear pair using suitable and reliable material. To expand the purpose of the study, attention has also been paid to the ISO 6336 standard-based calculation for the load-carrying capacity of the spur gear; FEA simulation using ANSYS software, and Rockwell hardness test were both conducted. From material analysis, the study found that the 19MnCr5 material has more fatigue strength, tensile strength, and better yield point as compared to C45 material. Also through mathematical and FEA comparison, the study establishes that the gear designed with 19MnCr5 material fulfils the prescribed safety limits and would operate for its recommended service life. Furthermore, it is clear from a series of Rockwell hardness test conducted, that after achieving higher hardness values by using 19MnCr5 rather than the C45 grade material, the gear would work without breakage.
Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781720666325 Category : Languages : en Pages : 30
Book Description
A procedure was developed to perform tooth contact analysis between a face gear meshing with a spur pinion using finite element analysis. The face gear surface points from a previous analysis were used to create a connected tooth solid model without gaps or overlaps. The face gear surface points were used to create a five tooth face gear Patran model (with rim) using Patran PCL commands. These commands were saved in a series of session files suitable for Patran input. A four tooth spur gear that meshes with the face gear was designed and constructed with Patran PCL commands. These commands were also saved in a session files suitable for Patran input. The orientation of the spur gear required for meshing with the face gear was determined. The required rotations and translations are described and built into the session file for the spur gear. The Abaqus commands for three-dimensional meshing were determined and verified for a simplified model containing one spur tooth and one face gear tooth. The boundary conditions, loads, and weak spring constraints were determined to make the simplified model work. The load steps and load increments to establish contact and obtain a realistic load was determined for the simplified two tooth model. Contact patterns give some insight into required mesh density. Building the two gears in two different local coordinate systems and rotating the local coordinate systems was verified as an easy way to roll the gearset through mesh. Due to limitation of swap space, disk space and time constraints of the summer period, the larger model was not completed.Bibel, George and Lewicki, David G. (Technical Monitor)Glenn Research CenterROTATION; GEAR TEETH; BOUNDARY CONDITIONS; FINITE ELEMENT METHOD; TIME; COMPUTER PROGRAMS; LOADS (FORCES)
Author: Gitin M. Maitra Publisher: McGraw-Hill Professional Publishing ISBN: 9780074602379 Category : Gearing Languages : en Pages : 0
Book Description
This new edition provides extensive information to designers on various aspects of gears and gearing systems. Very comprehensive in its coverage, the handbook contains enough tables, illustrative examples and diagrams to enable designers arrive at quick solutions for their problems. The handbook is based on ISO specifications and is a unique blend of practical as well as the theoretical aspects of gear designs. The new edition includes more on spiral bevel gears, arcoid gears, klingelnberg, and gleason systems and gear tooth checking.
Author: Kyle C. Stoker Publisher: ISBN: Category : Languages : en Pages :
Book Description
This research has provided the engineer with a tool to predict where and by how much the stresses of spur gears will increase when non-ideal conditions are present for both 2 dimensional and 3 dimensional analysis. A wide range of spur gears can be input to the parametric code and the Finite Element Analysis program will solve the contact problem and produce valid results. A method to predict progressive wear evolution for a 2 dimensional spur gear according to Archard's wear law has been implemented within the FEA code. The research has shown that with an increase in the axial separation wear depths will increase and the wear profile will be modified.
Author: Gitin M. Maitra
Author: Venkata Satya Naga Karthik Bommisetty
Author: Ranjit S. Dheri
Author: Edward W. Rhomberg
Author: Paisan Somprakit
Author: Gagandeep Singh
Author: Eugene Addison Tennyson
Author: National Aeronautics and Space Administration (NASA)
Author: Gitin M. Maitra
Author: Kyle C. Stoker
Author: H. R. Busby