Computational and Experimental Simulations in Engineering

Computational and Experimental Simulations in Engineering PDF Author: Kun Zhou
Publisher: Springer Nature
ISBN: 3031774892
Category :
Languages : en
Pages : 1040

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Transient Effects in Friction

Transient Effects in Friction PDF Author: Andreas Goedecke
Publisher: Springer Science & Business Media
ISBN: 370911506X
Category : Science
Languages : en
Pages : 211

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Book 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.

Hydraulic Transients and Computations

Hydraulic Transients and Computations PDF Author: Zh. Zhang
Publisher: Springer Nature
ISBN: 3030402339
Category : Technology & Engineering
Languages : en
Pages : 322

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Book Description
This book describes the fundamental phenomena of, and computational methods for, hydraulic transients, such as the self-stabilization effect, restriction of the Joukowsky equation, real relations between the rigid and elastic water column theories, the role of wave propagation speed, mechanism of the attenuation of pressure fluctuations, etc. A new wave tracking method is described in great detail and, supported by the established conservation and traveling laws of shockwaves, offers a number of advantages. The book puts forward a novel method that allows transient flows to be directly computed at each time node during a transient process, and explains the differences and relations between the rigid and elastic water column theories. To facilitate their use in hydropower applications, the characteristics of pumps and turbines are provided in suitable forms and examples. The book offers a valuable reference guide for engineers and scientists, helping them make transient computations for their own programming, while also contributing to the final standardization of methods for transient computations.

Computational and Experimental Simulations in Engineering

Computational and Experimental Simulations in Engineering PDF Author: Kun Zhou
Publisher: Springer Nature
ISBN: 3031774892
Category :
Languages : en
Pages : 1040

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Book Description


Transient Processes in Tribology

Transient Processes in Tribology PDF Author: A A Lubrecht
Publisher: Elsevier
ISBN: 0080474640
Category : Technology & Engineering
Languages : en
Pages : 892

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Book Description
The papers contained within this volume focus on the transient aspects of the preocesses in tribology highlighting the differences obtained with stationery conditions, be they experimental analytical or numerical.

Transient Phenomena in Multiphase Flow

Transient Phenomena in Multiphase Flow PDF Author: Naim Hamdia Afgan
Publisher: Chem/Mats-Sci/E
ISBN:
Category : Science
Languages : en
Pages : 1128

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Book Description


Interdisciplinary Approach to Liquid Lubricant Technology

Interdisciplinary Approach to Liquid Lubricant Technology PDF Author: Pei Moo Ku
Publisher:
ISBN:
Category : Lubrication and lubricants
Languages : en
Pages : 552

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Book Description


Fundamentals of Tribology and Bridging the Gap Between the Macro- and Micro/Nanoscales

Fundamentals of Tribology and Bridging the Gap Between the Macro- and Micro/Nanoscales PDF Author: Bharat Bhushan
Publisher: Springer Science & Business Media
ISBN: 9401007365
Category : Science
Languages : en
Pages : 961

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Book Description
The word tribology was fIrst reported in a landmark report by P. Jost in 1966 (Lubrication (Tribology)--A Report on the Present Position and Industry's Needs, Department of Education and Science, HMSO, London). Tribology is the science and technology of two interacting surfaces in relative motion and of related subjects and practices. The popular equivalent is friction, wear and lubrication. The economic impact of the better understanding of tribology of two interacting surfaces in relative motion is known to be immense. Losses resulting from ignorance of tribology amount in the United States alone to about 6 percent of its GNP or about $200 billion dollars per year (1966), and approximately one-third of the world's energy resources in present' use, appear as friction in one form or another. A fundamental understanding of the tribology of the head-medium interface in magnetic recording is crucial to the future growth of the $100 billion per year information storage industry. In the emerging microelectromechanical systems (MEMS) industry, tribology is also recognized as a limiting technology. The advent of new scanning probe microscopy (SPM) techniques (starting with the invention of the scanning tunneling microscope in 1981) to measure surface topography, adhesion, friction, wear, lubricant-fIlm thickness, mechanical properties all on a micro to nanometer scale, and to image lubricant molecules and the availability of supercomputers to conduct atomic-scale simulations has led to the development of a new fIeld referred to as Microtribology, Nanotribology, or Molecular Tribology (see B. Bhushan, J. N. Israelachvili and U.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 518

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Book Description


Friction Dynamics

Friction Dynamics PDF Author: Xiandong Liu
Publisher: Woodhead Publishing
ISBN: 0081002831
Category : Technology & Engineering
Languages : en
Pages : 318

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Book Description
Friction Dynamics: Principles and Applications introduces readers to the basic principles of friction dynamics, which are presented in a unified theoretical framework focusing on some of the most important engineering applications. The book's chapters introduce basic concepts and analytical methods of friction dynamics, followed by sections that explore the fundamental principles of frictions. Concluding chapters focus on engineering applications in brake dynamics, the friction dynamics of rods used in oil suck pump systems, and the friction impact dynamics of rotors. This book provides comprehensive topics and up-to-date results, also presenting a thorough account of important advancements in friction dynamics which offer insights into varied dynamic phenomena, helping readers effectively design and fabricate stable and durable friction systems and components for various engineering and scientific friction dynamical systems. - Investigates the most critical engineering and scientific applications - Provides the most comprehensive reference of its kind - Offers a systematic treatment and a unified framework - Explores cutting-edge methodologies to address non-stationary, non-linear dynamics and control

Handbook of Friction-Vibration Interactions

Handbook of Friction-Vibration Interactions PDF Author: Gang Sheng Chen
Publisher: Elsevier
ISBN: 0857094599
Category : Technology & Engineering
Languages : en
Pages : 409

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Book Description
Friction-vibration interactions are common but important phenomena in science and engineering. Handbook of Friction-Vibration Interactions introduces the principles and provides the resources to understand and work with them. A unified theoretical framework includes some of the most important engineering applications. The first three chapters in the book introduce basic concepts and analytical methods of friction and vibration. The fourth chapter presents the general principles on friction-vibration interactions, and also touches on various engineering applications. In the fifth chapter the concepts and methods are extended to some of the most critical engineering applications in high-tech industry, presenting the friction-vibration interaction principle and applications in data storage systems. - Covers a key topic in science and engineering, with applications in daily life - Introduces the principles of friction-vibration interactions - Analyzes, presents experiments, and treats real systems ranging from nano to micro to macro scales