Download or read book Finite Element Based Surface Fatigue Estimation in Involute Spur Gear written by Solomon Tekeste and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pitting and scoring is a phenomenon in which small particles are removed from the surface of the tooth due to the high contact stresses that are present between mating teeth. After the investigation of shot pinning to increase the tooth bending strength in gears, surface durability, in the form of macro and micro-pitting, is now considered the dominant restriction on gear life and performance. In this book a method is develop to study surface fatigue in involute spur gears using finite element analysis. In achieving this two-dimensional & three-dimensional equivalent contacting cylinders & three-dimensional model of involute spur gear is used. The modeling is done using finite element computer package, ANSYS & solid modeling software, CATIA. In this book effect of loading condition and material types in contact stress in gears, estimation of surface fatigue in rolling-sliding contact condition in spur gear, effect of initial surface roughness on surface fatigue is studied. The results obtained are compared with analytical method.
Download or read book Calculation of the Fatigue Life of a Surface hardened Shaft by the Finite element Method written by Heikki Keinänen and published by . This book was released on 1992 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tribology in Materials and Applications written by Jitendra Kumar Katiyar and published by Springer Nature. This book was released on 2020-05-23 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book broadens the knowledge of tribology. This book is evolved out of current research trends on tribological performance of systems related to nano tribology, rheology, engines, polymer brushes, composite materials, erosive wear and lubrication. The book deals with enhancing the ideas on tribological properties, the different types of wear phenomenon and lubrication enhancement. Further, the tribological performance of systems, whether nano, micro or macro-scale, depends upon a large number of external parameters and important among them are temperature, contact pressure and relative speed. Thus, the book focus on the theoretical aspects to industrial applications of tribology.
Download or read book NASA Reference Publication written by and published by . This book was released on 1977 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Life Analysis of Helical Gear Sets Using Lundberg Palmgren Theory written by John J. Coy and published by . This book was released on 1975 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Hot Spot Stress Approach to Fatigue Analysis of Welded Components written by Erkki Niemi and published by Springer. This book was released on 2017-08-28 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides background and guidance on the use of the structural hot-spot stress approach to fatigue analysis. The book also offers Design S-N curves for use with the structural hot-spot stress for a range of weld details, and presents parametric formulas for calculating stress increases due to misalignment and structural discontinuities. Highlighting the extension to structures fabricated from plates and non-tubular sections. The structural hot-spot stress approach focuses on cases of potential fatigue cracking from the weld toe and it has been in use for many years in tubular joints. Following an explanation of the structural hot-spot stress, its definition and its relevance to fatigue, the book describes methods for its determination. It considers stress determination from both finite element analysis and strain gauge measurements, and emphasizes the use of finite element stress analysis, providing guidance on the choice of element type and size for use with either solid or shell elements. Lastly, it illustrates the use of the recommendations in four case studies involving the fatigue assessment of welded structures using the structural hot-spot stress
Download or read book Direct Gear Design written by Alexander L. Kapelevich and published by CRC Press. This book was released on 2013-03-22 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last several decades, gearing development has focused on improvements in materials, manufacturing technology and tooling, thermal treatment, and coatings and lubricants. In contrast, gear design methods have remained frozen in time, as the vast majority of gears are designed with standard tooth proportions. This over-standardization significantly limits the potential performance of custom gear drives, especially in demanding aerospace or automotive applications. Direct Gear Design introduces an alternate gear design approach to maximize gear drive performance in custom gear applications. Developed by the author, the Direct Gear Design® method has been successfully implemented in a wide variety of custom gear transmissions over the past 30 years. The results are maximized gear drive performance, increased transmission load capacity and efficiency, and reduced size and weight. This book explains the method clearly, making it easy to apply to actual gear design. Describes the origin and theoretical foundations of the Direct Gear Design approach as well as some of its applications—and its limits Details the optimization techniques and the specifics of Direct Gear Design Discusses how this approach can be used with asymmetric gears to further improve performance Describes tolerance selection, manufacturing technologies, and measurement methods of custom gears Compares Direct Gear Design with traditional gear design from both an analytical and an experimental perspective Illustrates the applicability and benefits of this gear design approach with implementation examples Written by an engineer for engineers, this book presents a unique alternative to traditional gear design. It inspires readers to explore ways of improving gear transmission performance in custom gear applications, from higher transmission load capacity, efficiency, and reliability to lower size, weight, and cost.
Download or read book Mechanical Design Engineering Handbook written by Peter Childs and published by Elsevier. This book was released on 2024-09-30 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Design Engineering Handbook, Third Edition discusses the mechanical engineering skills that are essential to power generation, production, and transportation. Machine elements such as bearings, shafts, gears, belts, chains, clutches and belts represent fundamental building blocks for a wide range of technology applications. The aim of this handbook is to present an overview of the design process and to introduce the technology and selection of specific machine elements that are fundamental to a wide range of mechanical engineering design applications. This book includes detailed worked examples for the design and application of machine elements and over 600 images, with line drawings complemented by solid model illustrations to aid understanding of the machine elements and assemblies concerned. The context for engineering and mechanical design is introduced in the first chapter, which also presents a blended design process, incorporating principles from systematic and holistic design, as well as practical project management. - Provides a comprehensive treatment of machine elements, including bearings, gears, shafts, clutches, brakes, belts, chains, springs, wire rope, hydraulics, and pneumatics - Presents the design and selection of flow charts - Includes over 600 illustrations, presenting the technologies and their implementation - Covers detailed, worked examples throughout
Download or read book Green Tribology written by Michael Nosonovsky and published by Springer Science & Business Media. This book was released on 2012-01-15 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tribology is the study of friction, wear and lubrication. Recently, the concept of “green tribology” as “the science and technology of the tribological aspects of ecological balance and of environmental and biological impacts” was introduced. The field of green tribology includes tribological technology that mimics living nature (biomimetic surfaces) and thus is expected to be environmentally friendly, the control of friction and wear that is of importance for energy conservation and conversion, environmental aspects of lubrication and surface modification techniques, and tribological aspects of green applications such as wind-power turbines or solar panels. This book is the first comprehensive volume on green tribology. The chapters are prepared by leading experts in their fields and cover such topics as biomimetics, environmentally friendly lubrication, tribology of wind turbines and renewable sources of energy, and ecological impact of new technologies of surface treatment.
Download or read book Computer Aided Design Manufacturing Modeling and Simulation II written by Fang Yin Cheng and published by Trans Tech Publications Ltd. This book was released on 2012-12-13 with total page 1400 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings of the 2nd International Conference on Computer-Aided Design, Manufacturing, Modeling and Simulation (CDMMS 2012), held during the 21st to 23rd September 2012 in Chongqing, China, present original ideas and exciting new findings in disciplines such as CAD, CAM, Manufacturing, Mechanical Engineering, Modeling and Simulation.
Download or read book Mechanical Design written by P.R.N. Childs and published by Butterworth-Heinemann. This book was released on 2021-06-29 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Design: Theory and Applications, Third Edition introduces the design and selection of common mechanical engineering components and machine elements, hence providing the foundational "building blocks" engineers needs to practice their art. In this book, readers will learn how to develop detailed mechanical design skills in the areas of bearings, shafts, gears, seals, belt and chain drives, clutches and brakes, and springs and fasteners. Where standard components are available from manufacturers, the steps necessary for their specification and selection are thoroughly developed. Descriptive and illustrative information is used to introduce principles, individual components, and the detailed methods and calculations that are necessary to specify and design or select a component. As well as thorough descriptions of methodologies, this book also provides a wealth of valuable reference information on codes and regulations. - Presents new material on key topics, including actuators for robotics, alternative design methodologies, and practical engineering tolerancing - Clearly explains best practice for design decision-making - Provides end-of-chapter case studies that tie theory and methods together - Includes up-to-date references on all standards relevant to mechanical design, including ASNI, ASME, BSI, AGMA, DIN and ISO
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gears written by Vincenzo Vullo and published by Springer Nature. This book was released on 2020-02-21 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the geometric and kinematic design of the various types of gears most commonly used in practical applications, also considering the problems concerning their cutting processes. The cylindrical spur and helical gears are first considered, determining their main geometric quantities in the light of interference and undercut problems, as well as the related kinematic parameters. Particular attention is paid to the profile shift of these types of gears either generated by rack-type cutter or by pinion-rack cutter. Among other things, profile-shifted toothing allows to obtain teeth shapes capable of greater strength and more balanced specific sliding, as well as to reduce the number of teeth below the minimum one to avoid the operating interference or undercut. These very important aspects of geometric-kinematic design of cylindrical spur and helical gears are then generalized and extended to the other examined types of gears most commonly used in practical applications, such as straight bevel gears; crossed helical gears; worm gears; spiral bevel and hypoid gears. Finally, ordinary gear trains, planetary gear trains and face gear drives are discussed. This is the most advanced reference guide to the state of the art in gear engineering. Topics are addressed from a theoretical standpoint, but in such a way as not to lose sight of the physical phenomena that characterize the various types of gears which are examined. The analytical and numerical solutions are formulated so as to be of interest not only to academics, but also to designers who deal with actual engineering problems concerning the gears
Download or read book Advances in Mechanical Engineering and Technology written by Ranganath M. Singari and published by Springer Nature. This book was released on 2022-03-22 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the select proceedings of the International Conference on Advanced Production and Industrial Engineering (ICAPIE) - 2021 held at Delhi Technological University, Delhi, during June 18–19, 2021. The book covers the recent advances and challenges in the area of production and industrial engineering. Various topics covered include artificial intelligence and expert systems, CAD/CAM Integration Technology, CAD/CAM, automation and robotics, computer-aided geometric design and simulation, construction machinery and equipment, design tools, cutting tool material and coatings, dynamic mechanical analysis, optimization and control, energy machinery and equipment, flexible manufacturing technology and system, fluid dynamics, bio-fuels, fuel cells, high-speed/precision machining, laser processing technology, logistics and supply chain management, machinability of materials, composite materials, material engineering, mechanical dynamics and its applications, mechanical power engineering, mechanical transmission theory and applications, non-traditional machining processes, operations management, precision manufacturing and measurement, precision manufacturing and measurement, reverse engineering and structural strength and robustness. This book is useful for various researcher mainly mechanical and allied engineering discipline.
Download or read book Estimation of the Fatigue Life of Additively Manufactured Metallic Components Using Modified Strain Life Parameters Based on Surface Roughness written by Peter Grohs and published by . This book was released on 2019 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a method is developed to estimate the effects of surface roughness on the fatigue life of additively manufactured titanium Ti6Al4V, aluminum 7075-T6, and steel 4340 alloys through modified strain life parameters using finite element analysis (FEA). This method is highly beneficial to the fatigue analysis of as-built additively manufactured metal components, which possess rough surfaces that reduce fatigue life significantly but are challenging to analyze directly using finite element simulation because of complex geometries, i.e., modeling an exact surface profile is arduous. An effective stress concentration factor, incorporating roughness data, is defined to quantify their effects on effective stress and fatigue life. Notched finite element models with effective stress concentration factor values ranging from 3.058 - 10.75, representing rough surfaces from as-built additively manufactured components, are analyzed, and the S-N curves obtained. A parametric study is done to reproduce these S-N curves by using a smooth finite element model with modified strain life parameters. A mathematical model describing the variation of stress concentration in fatigue is incorporated into these lines of constant stress concentration factors to produce a more realistic fatigue model. Finally, there is a relationship established between effective stress concentration factor and modified strain life parameters such that the fatigue life of as-built additively manufactured parts can be easily calculated using finite element simulation by measuring surface roughness data and calculating the new effective strain life parameters, without using an actual rough surface in FEA.
Download or read book Parts 10 13 written by and published by . This book was released on 2005 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1982 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
