Friction Download Ebook PDF Epub Online

Author : Bo N.J. Persson
E. Tosatti
Publisher : Springer Science & Business Media
Release : 2013-04-17
Page : 460
Category : Science
ISBN 13 : 9401587051
Description :


The study of sliding friction is one of the oldest problems in physics, and certainly one of the most important from a practical point of view. Low-friction surfaces are in increasingly high demand for high-tech components such as computer storage systems, miniature motors, and aerospace devices. It has been estimated that about 5% of the gross national product in the developed countries is "wasted" on friction and the related wear. In spite of this, remarkable little is understood about the fundamental, microscopic processes responsible for friction and wear. The topic of interfacial sliding has experienced a major burst of in terest and activity since 1987, much of which has developed quite independently and spontaneously. This volume contains contributions from leading scientists on fundamental aspects of sliding friction. Some problems considered are: What is the origin of stick-and-slip motion? What is the origin of the rapid processes taking place within a lub at low sliding velocities? On a metallic surface, is the rication layer electronic or phononic friction the dominating energy dissipation pro cess? What is the role (if any) of self-organized criticality in sliding friction? How thick is the water layer during sliding on ice and snow? These and other questions raised in this book are of course only part ly answered: the topic of sliding friction is still in an early state of development.


Author : J.A.C. Martinis
M. Raous
Publisher : Springer Science & Business Media
Release : 2002-11-11
Page : 291
Category : Science
ISBN 13 : 9783211836958
Description :


The book addresses instability and bifurcation phenomena in frictional contact problems. The treatment of this subject has its roots in previous studies of instability and bifurcation in elastic, thermoelastic or elastic-plastic bodies, and in previous mathematical, mechanical and computational studies of unilateral problems. The salient feature of this book is to put together and develop concepts and tools for stability and bifurcation studies in mechanics, taking into account the inherent non-smoothness and non-associativity (non-symmetry) of unilateral frictional contact laws. The mechanical foundations, the mathematical theory and the computational algorithms for such studies are developed along six chapters written by the lecturers of a CISM course. Those concepts and tools are illustrated not only with enlightening academic examples but also with some demanding industrial applications, related, namely, to the automotive industry.


Author : Lisa Idzikowski
Publisher : Encyclopaedia Britannica
Release : 2014-07-15
Page : 32
Category : Juvenile Nonfiction
ISBN 13 : 1622755030
Description :


Readers are introduced to friction, its characteristics, and how it works in the world around us. The author shows how this physical force operates and how it can work to both our advantage and disadvantage. Readers will to learn the role friction plays in nature, in sports, in transportation, and many other domains.


Author : Anna Lowenhaupt Tsing
Publisher : Princeton University Press
Release : 2011-10-23
Page : 344
Category : Social Science
ISBN 13 : 1400830591
Description :


A wheel turns because of its encounter with the surface of the road; spinning in the air it goes nowhere. Rubbing two sticks together produces heat and light; one stick alone is just a stick. In both cases, it is friction that produces movement, action, effect. Challenging the widespread view that globalization invariably signifies a "clash" of cultures, anthropologist Anna Tsing here develops friction in its place as a metaphor for the diverse and conflicting social interactions that make up our contemporary world. She focuses on one particular "zone of awkward engagement"--the rainforests of Indonesia--where in the 1980s and the 1990s capitalist interests increasingly reshaped the landscape not so much through corporate design as through awkward chains of legal and illegal entrepreneurs that wrested the land from previous claimants, creating resources for distant markets. In response, environmental movements arose to defend the rainforests and the communities of people who live in them. Not confined to a village, a province, or a nation, the social drama of the Indonesian rainforest includes local and national environmentalists, international science, North American investors, advocates for Brazilian rubber tappers, UN funding agencies, mountaineers, village elders, and urban students, among others--all combining in unpredictable, messy misunderstandings, but misunderstandings that sometimes work out. Providing a portfolio of methods to study global interconnections, Tsing shows how curious and creative cultural differences are in the grip of worldly encounter, and how much is overlooked in contemporary theories of the global.


Author : Peter J. Blau
Publisher : CRC Press
Release : 1995-10-12
Page : 416
Category : Technology & Engineering
ISBN 13 : 9780824795764
Description :


This work offers a multidisciplinary approach to static and kinetic friction, both with and without lubrication, and reviews the conventional and novel methods used to measure friction. The elementary problems found in the mechanics of sliding objects and machine components, and the effects of contact pressure, sliding speed, surface roughness, humidity and temperature on friction, are discussed.;College or university bookstores may order five or more copies at a special student price, available upon request.


Author : Sandra Brown
Publisher : Grand Central Publishing
Release : 2016-07-26
Page : 370
Category : Fiction
ISBN 13 : 9781455581191
Description :


From #1 New York Times bestselling author Sandra Brown comes a gripping story of family ties and forbidden attraction. Crawford Hunt wants his daughter back. Following the death of his wife four years ago, Crawford, a Texas Ranger, fell into a downward spiral that left him relegated to deskwork and with his five-year-old daughter Georgia in the custody of her grandparents. But Crawford has cleaned up his act, met all the court imposed requirements, and now the fate of his family lies with Judge Holly Spencer. Holly, ambitious and confident, temporarily occupies the bench of her recently deceased mentor. With an election upcoming, she must prove herself worthy of making her judgeship permanent. Every decision is high-stakes. Despite Crawford's obvious love for his child and his commitment to being an ideal parent, Holly is wary of his checkered past. Her opinion of him is radically changed when a masked gunman barges into the courtroom during the custody hearing. Crawford reacts instinctually, saving Holly from a bullet. But his heroism soon takes on the taint of recklessness. The cloud over him grows even darker after he uncovers a horrifying truth about the courtroom gunman and realizes that the unknown person behind the shooting remains at large . . .and a threat. Catching the real culprit becomes a personal fight for Crawford. But pursuing the killer in his customary diehard fashion will jeopardize his chances of gaining custody of his daughter, and further compromise Judge Holly Spencer, who needs protection not only from an assassin, but from Crawford himself and the forbidden attraction between them. FRICTION will keep you on the edge of your seat with breathtaking plot twists and the unforgettable characters that make Sandra Brown one of the world's best-loved authors. It is an extraordinary novel about the powerful ties that bind us to the ones we love and the secrets we keep to protect them.


Author : Sandra Brown
Publisher : Grand Central Publishing
Release : 2015-08-18
Page : 300
Category : Fiction
ISBN 13 : 1455581178
Description :


From #1 New York Times bestselling author Sandra Brown comes a gripping story of family ties and forbidden attraction. Crawford Hunt wants his daughter back. Following the death of his wife four years ago, Crawford, a Texas Ranger, fell into a downward spiral that left him relegated to deskwork and with his five-year-old daughter Georgia in the custody of her grandparents. But Crawford has cleaned up his act, met all the court imposed requirements, and now the fate of his family lies with Judge Holly Spencer. Holly, ambitious and confident, temporarily occupies the bench of her recently deceased mentor. With an election upcoming, she must prove herself worthy of making her judgeship permanent. Every decision is high-stakes. Despite Crawford's obvious love for his child and his commitment to being an ideal parent, Holly is wary of his checkered past. Her opinion of him is radically changed when a masked gunman barges into the courtroom during the custody hearing. Crawford reacts instinctually, saving Holly from a bullet. But his heroism soon takes on the taint of recklessness. The cloud over him grows even darker after he uncovers a horrifying truth about the courtroom gunman and realizes that the unknown person behind the shooting remains at large . . .and a threat. Catching the real culprit becomes a personal fight for Crawford. But pursuing the killer in his customary diehard fashion will jeopardize his chances of gaining custody of his daughter, and further compromise Judge Holly Spencer, who needs protection not only from an assassin, but from Crawford himself and the forbidden attraction between them. FRICTION will keep you on the edge of your seat with breathtaking plot twists and the unforgettable characters that make Sandra Brown one of the world's best-loved authors. It is an extraordinary novel about the powerful ties that bind us to the ones we love and the secrets we keep to protect them.


Author : Bo N.J. Persson
Publisher : Springer Science & Business Media
Release : 2013-03-14
Page : 463
Category : Science
ISBN 13 : 3662036460
Description :


Sliding friction is one of the oldest problems in physics and certainly one of the most important from a practical point of view. The ability to produce durable low-friction surfaces and lubricant fluids has become an important factor in the miniaturization of moving components in many technological devices, e.g., magnetic storage, recording systems, miniature motors and many aerospace components. This book will be useful to physicists, chemists, materials scientists, and engineers who want to understand sliding friction. The book (or parts of it) could also form the basis for a modern undergraduate or graduate course on tribology.


Author : Le Xuan Anh
Publisher : Springer Science & Business Media
Release : 2003-04-23
Page : 269
Category : Computers
ISBN 13 : 9783540006541
Description :


This book addresses the general theory of motion of mechanical systems with Coulomb friction. In particular, the book focuses on the following specific problems: i) derivation of the equations of motion, ii) Painleve's paradoxes, iii) tangential impact and dynamic seizure, and iiii) frictional self-excited oscillations. In addition to theoretical results, the book contains a detailed description of experiments that have been performed. These show that, in general, the friction force at the instant of transition to motion is determined by the rate of tangential load and does not depend on the duration of the previous contact. These results are used to develop the theory of frictional self-excited oscillations. A number of industrially relevant mechanisms are considered, including the Painleve-Klein scheme, epicyclic mechanisms, crank mechanisms, gear transmission, the link mechanism of a planing machine, and the slider of metal-cutting machine tools. The book is intended for researchers, engineers and students in mechanical engineering.


Author : Roger Dooley
Publisher : McGraw Hill Professional
Release : 2019-05-17
Page : 320
Category : Business & Economics
ISBN 13 : 1260135705
Description :


In 2016, $4.6 trillion of merchandise was left in abandoned e-commerce shopping carts. Every year, the U.S. economy loses $3 trillion dollars in productivity due to excess bureaucracy. Red tape and over-complicated licenses have contributed to China’s GDP exceeding India’s by $82 trillion over the span of just three decades. If you’re a business leader, these statistics should give you nightmares. According to science-based marketing and business expert Roger Dooley, they illustrate the real and growing threat of “friction,” which he defines as the unnecessary expenditure of time, effort, or money in performing a task. In today's high-speed, customer-empowered world, the levels of swiftness and efficiency of business transactions will determine ultimate success or failure. In this groundbreaking guide, Dooley helps you spot the inevitable points of friction in your organization, and he provides the tools and insight you need to eliminate them. By truly understanding the impact friction can have, you’ll be able to establish positive habits and eliminate negative ones—all with the end result of building a company that’s the envy of your industry. Friction takes you step-by-step through the process of: •Empowering frank conversations•Guiding individual and team behaviors•Getting ahead of friction •Optimizing the customer experience •Building a frictionless corporate culture Combining scientific research with real-life examples of leaders who have conquered business friction, Dooley teaches you how to identify roadblocks, alter them for the benefit of both business and customer, and create positive, lasting change. If you’re in a leadership position, now is the time to declare war on friction—before your competitors do. Stamp out ridiculous rules, pointless procedures, and meaningless meetings. Become a relentless advocate for the customer and for minimizing customer effort. Lubricate every point of friction and make your company run like a well-oiled machine. Friction provides the know-how you need to lead your company to industry dominance.


Author : B S Gupta
Publisher : Elsevier
Release : 2008-06-02
Page : 488
Category : Technology & Engineering
ISBN 13 : 1845694724
Description :


Friction is a major issue in both the production of textiles and in the finished product. This authoritative book reviews how friction occurs and the ways it can be measured and controlled. The book begins by looking at how friction can be defined and how the structure and properties of textile fibres lead to friction behaviour. It also discusses slip-stick phenomena in textiles and ways of measuring friction in yarns and fabric. The second part of the book reviews friction in particular textiles, including cotton, wool and synthetic fibres as well as woven fabrics. These and other chapters also discuss ways of controlling friction, including fabric finishes and lubricants. With its distinguished editor and contributions from some of the world’s leading authorities in the subject, Friction in textile materials is a standard reference for the textile industry and those researching this important topic. An authoritative review of friction, its management and control


Author : V. A. Bely
A. I. Sviridenok
Publisher : Elsevier
Release : 2013-10-22
Page : 426
Category : Technology & Engineering
ISBN 13 : 1483152057
Description :


Friction and Wear in Polymer-Based Materials discusses friction and wear problems in polymer-based materials. The book is organized into three parts. The chapters in Part I cover the basic laws of friction and wear in polymer-based materials. Topics covered include frictional interaction during metal-polymer contact and the influence of operating conditions on wear in polymers. The chapters in Part II discuss the structure and frictional properties of polymer-based materials; the mechanism of frictional transfer when a polymer comes into contact with polymers, metals, and other materials; and controlling the frictional properties of polymer materials. Part III is devoted to applications of polymer-based materials in friction assemblies. It covers composite self-lubricating materials and polymer materials for complexly loaded main friction assemblies. This work may prove useful to specialists interested in the problems of using polymer materials. It also aims to stimulate deeper research into the field of friction and wear in polymer-based materials.


Author : Christopher Forest
Joanne Mattern
Publisher : Everyday Stem
Release : 2020-08
Page : 32
Category : Juvenile Nonfiction
ISBN 13 : 9781791123727
Description :


Each title in the Everyday STEM series provides an exciting look at real-world physics, engaging readers with dynamic images and examples.


Author : Andreas Goedecke
Publisher : Springer Science & Business Media
Release : 2014-07-08
Page : 197
Category : Technology & Engineering
ISBN 13 : 370911506X
Description :


Transient friction effects determine the behavior of a wide class of mechatronic systems. Classic examples are squealing brakes, stiction in robotic arms, or stick-slip in linear drives. To properly design and understand mechatronic systems of this type, good quantitative models of transient friction effects are of primary interest. The theory developed in this book approaches this problem bottom-up, by deriving the behavior of macroscopic friction surfaces from the microscopic surface physics. The model is based on two assumptions: First, rough surfaces are inherently fractal, exhibiting roughness on a wide range of scales. Second, transient friction effects are caused by creep enlargement of the real area of contact between two bodies. This work demonstrates the results of extensive Finite Element analyses of the creep behavior of surface asperities, and proposes a generalized multi-scale area iteration for calculating the time-dependent real contact between two bodies. The toolset is then demonstrated both for the reproduction of a variety of experimental results on transient friction as well as for system simulations of two example systems.


Author : Ard'shir Guran
Friedrich Pfeiffer
Publisher : World Scientific
Release : 1996-08-23
Page : 264
Category : Technology & Engineering
ISBN 13 : 9814498904
Description :


The dynamics of dissipative mechanical and structural systems is being investigated at various institutions and laboratories worldwide with ever-increasing sophistication of modeling, analysis and experiments. This book offers a collection of contributions from these research centers that represent the state-of-the-art in the study of friction oscillators. It provides the reader with the fruits of a team effort by leaders in this fascinating field. The topics covered include friction modeling, self-excited friction oscillators, homogeneous frictional systems, unsteady lubricated friction, instantaneous contact geometry, impact damping, friction-induced instability and nonlinear dynamics of stick-slip systems, among other topics. This book gives a comprehensive picture of dynamics of dissipative mechanical and structural systems. It also gives an up-to-date account of the present state of the field. It will be of interest to engineers, rheologists, material scientists, applied mathematicians, physicists and historians of science and technology. Contents:Analysis of a Self-Excited Friction Oscillator with External Excitation (K Popp et al.)The Nonlinear Dynamics of Oscillators with Stick-Slip Friction (B Feeny)Dynamics of Homogeneous Frictional Systems (J Inaudi & J Kelly)Friction and Impact Damping in a Truss Using Pinned Joints (S Folkman et al.)Design of a Friction Damper to Control Vibration of Turbine Blades (J-H Wang)Modeling Unsteady Lubricated Friction (A Polycarpou & A Soom) Readership: Engineers, rheologists, materials scientists, applied mathematicians, physicists and historians of science and technology. keywords:


Author : Vladimir Panjkovic
Publisher : CRC Press
Release : 2014-02-25
Page : 239
Category : Science
ISBN 13 : 1482205890
Description :


When it comes to metal rolling, understanding and controlling frictional phenomena is essential to improving product and developing a more effective approach to friction reduction. Providing a historical perspective that goes as far back as the days of Leonardo da Vinci and continues up until the present day, Friction and the Hot Rolling of Steel chronicles the fundamental causes of friction. This book includes well-documented, on-site observations in various commercial plants, presents and examines practical problems, and provides a critical analysis of literary data related to the subject. It explains the base mechanisms of friction, and offers insight and instruction on improving the control and understanding of friction in hot strip mills and other industrial plants. The text presents mathematical models of friction in control and general engineering in a way that enables engineers to test and refine them in their plants. Engineers have the ability to use them to control friction and minimize its negative effects, particularly as it relates to energy waste and product defects. Organized into four sections, this book outlines the evolutional concepts of friction, and covers the general phenomena relevant to the rolling of metals. This includes the impact of roughness and velocity, basics of liquid and solid lubrication, mathematical modelling, and the properties of materials that affect friction in steel rolling, such as metals, oxides, and carbides. It connects the theoretical concepts, laboratory-scale observations, and phenomena in other areas of science and engineering to the large-scale industrial process of hot rolling. It also addresses roll properties, oxidation, wear and chemical composition of rolls and their impact on friction, the evolution of friction over schedules and roll campaigns, and mathematical modelling of friction in hot rolling. Friction and the Hot Rolling of Steel contains a large body of technical information that includes various chemical and physical properties of relevant materials, mathematical models, and plant and laboratory observations. It also provides an extensive reference list of sources that address specific problems and interests in more detail. Presents practical problems that help academics and industrial researchers to identify promising new research areas in tribology and metal processing Offers an insight into the principles of the effective research that combines both academic excellence and industrial relevance Illustrates with observations and easy-to-understand analogies, enhancing the understanding and control of the mechanisms that influence friction in industrial plants This text services technical, research, and academic personnel working in steel processing, railway engineering, rolling of other metals, solid lubrication, the automotive industry, and more.


Author : Brian Armstrong-Hélouvry
Publisher : Springer Science & Business Media
Release : 2012-12-06
Page : 173
Category : Technology & Engineering
ISBN 13 : 1461539722
Description :


It is my ambition in writing this book to bring tribology to the study of control of machines with friction. Tribology, from the greek for study of rubbing, is the discipline that concerns itself with friction, wear and lubrication. Tribology spans a great range of disciplines, from surface physics to lubrication chemistry and engineering, and comprises investigators in diverse specialities. The English language tribology literature now grows at a rate of some 700 articles per year. But for all of this activity, in the three years that I have been concerned with the control of machines with friction, I have but once met a fellow controls engineer who was aware that the field existed, this including many who were concerned with friction. In this vein I must confess that, before undertaking these investigations, I too was unaware that an active discipline of friction existed. The experience stands out as a mark of the specialization of our time. Within tribology, experimental and theoretical understanding of friction in lubricated machines is well developed. The controls engineer's interest is in dynamics, which is not the central interest of the tribologist. The tribologist is more often concerned with wear, with respect to which there has been enormous progress - witness the many mechanisms which we buy today that are lubricated once only, and that at the factory. Though a secondary interest, frictional dynamics are note forgotten by tribology.


Author : John Hewitt Jellett
Publisher :
Release : 1872
Page : 220
Category : Friction
ISBN 13 :
Description :



Author : G.M. Bartenev
V.V. Lavrentev
Publisher : Elsevier
Release : 1981-11-01
Page : 319
Category : Technology & Engineering
ISBN 13 : 9780080875705
Description :


Friction and Wear of Polymers


Author : David R. Ashbaugh
Publisher : CRC Press
Release : 1999-10-27
Page : 248
Category : Law
ISBN 13 : 1420048813
Description :


A thumb print left at the scene of a grisly murder. Fingerprints taken from a getaway car used in a bank robbery. A palm print recovered from the shattered glass door of a burglarized home. Indeed, where crimes are committed, careless perpetrators will invariably leave behind the critical pieces of evidence—most likely in the form of fingerprints—needed to catch and convict them. But the science of fingerprint identification isn’t always as cut and dry as detective novels and movies make it out to be. Quantitative-Qualitative Friction Ridge Analysis, a new book in the ongoing Practical Aspects of Criminal and Forensic Investigations series, examines the latest methods and techniques in the science of friction ridge identification, or ridgeology. David R. Ashbaugh examines every facet of the discipline, from the history of friction ridge identification and its earliest pioneers and researchers, to the scientific basis and the various steps of the identification process. The structure and growth of friction skin and how it can leave latent or visible prints are examined, as well as advanced identification methods in ridgeology, including Poroscopy, Edgeoscopy, Pressure Distortion and Complex or Problem Print Analysis. The book, which features several detailed illustrations and photographs, also includes a new method for Palmar Flexion Crease Identification (palm lines) designed by the author and which has helped solve several criminal cases where fingerprints were not available. For crime scene technicians, forensic identification specialists, or anyone else pursuing a career in forensic science, this book is arguably the definitive source in the science of friction ridge identification.