System Dynamics And Long Term Behaviour Of Railway Vehicles Track And Subgrade

Author: Karl Popp
Editor: Springer Science & Business Media
ISBN: 3540454764
Size: 15,80 MB
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During the last decades completely new technologies for high speed railway vehicles have been developed. The primary goals have been to increase traction, axle load, and travelling speed, and to guarantee the safety of the passengers. However, new developments have revealed new limitations: settlement and destruction of the ballast and the subgrade lead to deterioration of the track; irregular wear of the wheels causes an increase in overall load and deterioration in passenger comfort; and damage of the running surfaces of the rail and the wheel is becoming more frequent. These problems have been investigated in the Priority Programme SPP 1015 supported by the Deutsche Forschungsgemeinschaft (DFG), with the goal of better understanding of the dynamic interaction of vehicle and track, and the long-term behavior of the components of the system. The book contains the scientific results of the programme as presented at the concluding colloquium held at University of Stuttgart, Germany, 2002.

Static And Dynamic Coupled Fields In Bodies With Piezoeffects Or Polarization Gradient

Author: Jerzy Nowacki
Editor: Springer Science & Business Media
ISBN: 3540316701
Size: 17,88 MB
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This book is devoted to the theory of coupled electro-magneto-thermo-elastic fields excited in different bodies by various sources, both static and dynamic. It presents the classical piezoelectric and piezomagnetic effects, the Mindlin’s electroelastic coupling due to a polarization gradient, and different combinations of these effects with thermoelasticity.

Mechanical System Dynamics

Author: Friedrich Pfeiffer
Editor: Springer Science & Business Media
ISBN: 3540794360
Size: 10,87 MB
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Mechanics as a fundamental science in Physics and in Engineering deals with interactions of forces resulting in motion and deformation of material bodies. Similar to other sciences Mechanics serves in the world of Physics and in that of Engineering in a di?erent way, in spite of many and increasing inter- pendencies. Machines and mechanisms are for physicists tools for cognition and research, for engineers they are the objectives of research, according to a famous statement of the Frankfurt physicist and biologist Friedrich Dessauer. Physicists apply machines to support their questions to Nature with the goal of new insights into our physical world. Engineers apply physical knowledge to support the realization process of their ideas and their intuition. Physics is an analytical Science searching for answers to questions concerning the world around us. Engineering is a synthetic Science, where the physical and ma- ematical fundamentals play the role of a kind of reinsurance with respect to a really functioning and e?ciently operating machine. Engineering is also an iterative Science resulting in typical long-time evolutions of their products, but also in terms of the relatively short-time developments of improving an existing product or in developing a new one. Every physical or mathematical Science has to face these properties by developing on their side new methods, new practice-proved algorithms up to new fundamentals adaptable to new technological developments. This is as a matter of fact also true for the ?eld of Mechanics.

Dynamical Contact Problems With Friction

Author: Walter Sextro
Editor: Springer Science & Business Media
ISBN: 3540453172
Size: 17,36 MB
Format: PDF
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Friction contacts are used to transmit forces or to dissipate energy. The aim of this second edition is to describe an efficient procedure to model dynamical contact problems with friction. This procedure is applied to different practical problems and validated by experiments. A thorough understanding of friction phenomena can lead to improvements like the reduction of noise and maintenance costs, increased useful life of machines and improved energy efficiency.

Non Smooth Problems In Vehicle Systems Dynamics

Author: Per Grove Thomsen
Editor: Springer Science & Business Media
ISBN: 9783642013560
Size: 16,12 MB
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The book combines vehicle systems dynamics with the latest theoretical developments in dynamics of non-smooth systems and numerical analysis of differential-algebraic dynamical systems with discontinuities. These two fields are fundamental for the modelling and analysis of vehicle dynamical sytems. The results are also applicable to other non-smooth dynamical systems.

Noise And Vibration Mitigation For Rail Transportation Systems

Author: Tatsuo Maeda
Editor: Springer Science & Business Media
ISBN: 4431539271
Size: 11,63 MB
Format: PDF, ePub
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This volume contains the contributions to the 10th International Workshop on Railway Noise, held October 18–22, 2010, in Nagahama, Japan, organized by the Railway Technical Research Institute (RTRI), Japan. With 11 sessions and 3 poster sessions, the workshop featured presentations by international leaders in the field of railway noise and vibration. All subjects relating to 1. prospects, legal regulation, and perception; 2. wheel and rail noise; 3. structure-borne noise and squeal noise; 4. ground-borne vibration; 5. aerodynamic noise and micro-pressure waves from tunnel portals; 6. interior noise and sound barriers; and 7. prediction, measurements, and monitoring are addressed here. This book is a useful “state-of-the-art” reference for scientists and engineers involved in solving environmental problems of railways.

Dynamics Of High Speed Vehicles

Author: W.O. Schiehlen
Editor: Springer
ISBN: 3709129265
Size: 11,35 MB
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Dynamics Of Railway Vehicle Systems

Author: Vijay Garg
Editor: Elsevier
ISBN: 0323151086
Size: 18,77 MB
Format: PDF, ePub, Mobi
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Dynamics of Railway Vehicle Systems offers a comprehensive and analytical treatment of the rail-wheel interaction problem and its effect on vehicle dynamics. The development of mathematical models and their applications to dynamic analyses and the design of railway vehicles are discussed. This book consists of 11 chapters and opens with an overview of the background material required to study the dynamics of railway vehicles, with emphasis on analytical techniques used to determine the dynamic response of single- and multiple-degree-of-freedom systems. Numerical solutions of linear and nonlinear dynamic systems are also given, and various problems associated with the dynamic behavior of railway vehicles are addressed. Several mathematical models are proposed to study these problems. The following chapters focus on the wheel-rail rolling contact theories being applied in railway vehicle dynamics problems; modeling of the vehicle and its components on both tangent and curved railroad tracks; and the interaction between railway vehicles and bridges. The final chapter underscores the needs for validating mathematical models that are used to study the dynamic behavior of railway vehicles and train consists. This monograph will be of value to design and research engineers, transportation officials, mathematicians, analysts, and research workers interested in the dynamics of railway vehicle systems.

Icctp 2009

Author: Yinhai Wang
Editor: ASCE Publications
ISBN: 9780784473115
Size: 11,66 MB
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Proceedings of the Ninth International Conference of Chinese Transportation Professionals, held in Harbin, China, August 5-9, 2009. Sponsored by North American Chinese Overseas Transportation Association (NACOTA); Harbin Institute Of Technology; Transportation & Development Institute of ASCE. This collection contains 446 papers of interest to transportation professionals. Topics include: transportation safety; transportation planning and operations; emergency response systems and technologies; intelligent transportation systems; energy saving and alternative energy; automotive exhaust treatment and environmental protection; new technology on transportation infrastructure (pavement, bridge); highway maintenance and management; transportation management, economy, and policy; logistics; vehicle operations technologies; and rail and transit systems.

Vehicle Dynamics

Author: Dieter Schramm
Editor: Springer
ISBN: 354036045X
Size: 20,52 MB
Format: PDF, ePub
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The authors examine in detail the fundamentals and mathematical descriptions of the dynamics of automobiles. In this context different levels of complexity will be presented, starting with basic single-track models up to complex three-dimensional multi-body models. A particular focus is on the process of establishing mathematical models on the basis of real cars and the validation of simulation results. The methods presented are explained in detail by means of selected application scenarios.