Procedure for Tooth Contact Analysis of a Face Gear Meshing with a Spur Gear Using Finite Element Analysis PDF Download
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Author: National Aeronautics and Space Adm Nasa Publisher: Independently Published ISBN: 9781723748578 Category : Science 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: National Aeronautics and Space Adm Nasa Publisher: Independently Published ISBN: 9781723748578 Category : Science 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: Publisher: ISBN: Category : Languages : en Pages : 52
Book Description
A face gear drive with a spur involute pinion is considered. The generation of the face gear is based on application of a grinding or cutting worm whereas the conventional method of generation is based on application of an involute shaper. An analytical approach for determination of: (1) the worm thread surface, (2) avoidance of singularities of the worm thread surface, (3) dressing of the worm, and (4) determination of stresses of the face-gear drive, is proposed. A computer program for simulation of meshing and contact of the pinion and face-gear has been developed. Correction of machine-tool settings is proposed for reduction of the shift of the bearing contact caused by misalignment. An automatic development of the model of five contacting teeth has been proposed for stress analysis. Numerical examples for illustration of the developed theory are provided.
Author: Publisher: ISBN: Category : Languages : en Pages : 38
Book Description
A new type of face gear drive for application in transmissions, particularly in helicopters, has been developed. The new geometty differs from the existing geometry by application of asymmetric profiles and double-crowned pinion of the face gear mesh. The paper describes the computerized design, simulation of meshing and contact, and stress analysis by finite element method. Special purpose computer codes have been developed to conduct the analysis. The analysis of this new type of face gear is illustrated with a numerical example.
Author: Ruxu Du Publisher: Springer Science & Business Media ISBN: 3642293085 Category : Technology & Engineering Languages : en Pages : 182
Book Description
"The Mechanics of Mechanical Watches and Clocks" presents historical views and mathematical models of mechanical watches and clocks. Although now over six hundred years old, mechanical watches and clocks are still popular luxury items that fascinate many people around the world. However few have examined the theory of how they work as presented in this book. The illustrations and computer animations are unique and have never been published before. It will be of significant interest to researchers in mechanical engineering, watchmakers and clockmakers, as well as people who have an engineering background and are interested in mechanical watches and clocks. It will also inspire people in other fields of science and technology, such as mechanical engineering and electronics engineering, to advance their designs. Professor Ruxu Du works at the Chinese University of Hong Kong, China. Assistant Professor Longhan Xie works at the South China University of Technology, China.
Author: Lokamanya Siva Manohar Rampilla Publisher: ISBN: Category : Computer-aided design Languages : en Pages : 47
Book Description
Face Gears have alternative gear-teeth configuration compared to Bevel Gears. Face Gear have a standard spur pinion as opposed to a bevel Gear. This work concentrates on modeling of a Face-gear, Meshed with a spur gear, using CAD Software and Finite Elements Analysis. The bending stress developed at the gear teeth is determined. Numerical results are validated using the bending stress developed between two involute spur gears.
Author: National Aeronautics and Space Administration NASA Publisher: ISBN: 9781729135778 Category : Languages : en Pages : 28
Book Description
A numerical procedure for evaluating and monitoring contact stresses in meshing gear teeth is discussed. The procedure is intended to extend the range of applicability and to improve the accuracy of gear contact stress analysis. The procedure is based upon fundamental solution from the theory of elasticity. It is an iterative numerical procedure. The method is believed to have distinct advantages over the classical Hertz method, the finite-element method, and over existing approaches with the boundary element method. Unlike many classical contact stress analyses, friction effects and sliding are included. Slipping and sticking in the contact region are studied. Several examples are discussed. The results are in agreement with classical results. Applications are presented for spur gears. Somprakit, Paisan and Huston, Ronald L. Unspecified Center NSG-3188; DA PROJ. 1L1-62211-A-47-A; RTOP 505-63-36...
Author: Veniamin Goldfarb Publisher: Springer Nature ISBN: 3030349454 Category : Technology & Engineering Languages : en Pages : 530
Book Description
This is the third book in a series devoted to gear design and production. Comprising papers by scientists and gear experts from around the globe, it covers recent developments in practically all spheres of mechanical engineering related to gears and transmissions. It describes advanced approaches to research, design, testing and production of various kinds of gears for a vast range of applications, with a particular focuses on advanced computer-aided approaches for gear analysis, simulation and design, the application of new materials and tribological issues.
Author: Jitendra Kumar Katiyar Publisher: CRC Press ISBN: 1000778428 Category : Technology & Engineering Languages : en Pages : 337
Book Description
Covering energy-saving technologies and how these are incorporated into component design, this book is relevant to many industries, including automotive engineering, and discusses the topical issue of sustainability in industry. This book details recent fundamental developments in the field of tribology in industrial systems. Tribology has advanced significantly in recent years. Tribological performance depends on external parameters such as contact pressure at the interface, system temperature, relative speed between bodies and contact behaviour. Through ensuring that mechanisms work in an energy-efficient manner and minimizing wear, engineers should seek to implement the study of tribology to improve the life of machinery within industry. Essential to the study of component design and condition monitoring, the book touches upon topics such as gears, bearings and clutches. Additionally, it discusses tribology’s relation to Industry 4.0 and incorporates the results from cutting-edge research. Industrial Tribology: Sustainable Machinery and Industry 4.0 will be of interest to all engineers working in industry and involved in mechanical engineering, material engineering, mechanisms and component design and automotive engineering.
Author: National Aeronautics and Space Adm Nasa
Author: National Aeronautics and Space Adm Nasa
Author: 
Author: 
Author: Ruxu Du
Author: 
Author: Lokamanya Siva Manohar Rampilla
Author: National Aeronautics and Space Administration NASA
Author: Veniamin Goldfarb
Author: 
Author: Jitendra Kumar Katiyar