Switch-Mode CVT: Torsion Spring

A Switch-Mode Continuously Variable Transmission is the mechanical analog of a boost converter circuit. The system uses a high-speed clutch to transfer packets of energy from a flywheel to a torsion spring, which drives the output. This project focuses on the design of a torsion spring, which can deflect 180 deg., has a linear spring rate, and fits into a car transmission. It must also have low inertia, to ensure efficiency, and be back-drivable, for regenerative braking. Two unique designs were prototyped then tested using a simulated drive-train consisting of a flywheel input, an electromagnetic clutch, and a disc brake or flywheel. By comparing qualitative and quantitative characteristics of each, the group chose one design which was developed full-scale and tested

Design and Characterization for Regenerative Shock Absorbers

L'abstract è presente nell'allegato / the abstract is in the attachmen

Oscillation Dampers and Shock Absorbers in Railway Vehicles (Mathematical Models)

Манашкин, Л. А. Гасители колебаний и амортизаторы ударов рельсовых экипажей (математические модели) : монография / Л. А. Манашкин, С. В. Мямлин, В. И. Приходько. — Д. : АРТ-ПРЕС, 2007. — 196 с. — ISBN 978-966-348-121-0 УДК 629.4.027.01.015Manashkin, L. Oscillation Dampers and Shock Absorbers in Railway Vehicles (Mathematical Models) / L. Manashkin, S. Myamlin, V. Prikhodko. — Dnipropetrovsk : 2009. — 180 p. — doi: 10.15802/978-966-348-121-0RU: Монография посвящена моделированию устройств гашения колебаний – амортизаторов и гасителей колебаний. Рассмотрены различные типы поглощающих аппаратов, их конструктивные особенности и математические модели, описывающие их работу. Приведены методики испытаний гасителей колебаний и поглощающих аппаратов, а также способы обработки результатов измерений. Книга предназначена для ученых и инженеров-конструкторов, занимающихся проектированием и изучением работы различных амортизирующих устройств на железнодорожном транспорте. Может быть полезна также аспирантам, магистрам и студентам, изучающим конструкцию и динамику подвижного состава железных дорог и промышленного транспорт.UK: Монографія присвячена моделюванню пристроїв гасіння коливань – амортизаторів і гасителів коливань. Розглянуті різні типи поглинальних апаратів, їх конструктивні особливості й математичні моделі, що описують їх роботу. Наведені методики випробувань гасителів коливань і поглинальних апаратів, а також способи обробки результатів вимірювань. Книга призначена для вчених і інженерів-конструкторів, які займаються проектуванням і вивченням роботи різних амортизуючих пристроїв на залізничному транспорті. Може бути корисна також для аспірантів, магістрів і студентів, які вивчають конструкцію і динаміку рухомого складу залізниць і промислового транспорту.EN: The Monograph deals with the simulation of oscillation damping units – the shock absorbers and oscillation dampers. Various types of draft gears are considered including their structural features and mathematical models describing their operation. The test methods for oscillation dampers and draft gears are described together with the test results processing techniques. The book is issued for the scientists and designers researching and developing various shock absorbing units in railway vehicles. It may be useful for postgraduate, master degree and other students studying the structure and dynamics of the railways rolling stock and industrial transport

The dynamic investigation of intrinsic vibration characteristics of a stranding machine by the finite element method

In response to the design problems of violent vibration and noise when a stranding machine is running at high speed, this project completed a motion simulation and vibration analysis based on the prototype FB-650C-2 bow-type stranding machine produced by Fuchuan Mechanical and Electrical Technology Co. The modal analysis was carried out in ANSYS to obtain the first eight orders of inherent frequencies and vibration patterns, combined with excitation force analysis to verify whether the rotating parts could avoid the resonant frequency when operating. Harmonic response analysis was carried out based on the modal state to calculate the steady-state forced vibration of the structure, and the variation curve of response value (usual deformation) with frequency and the cloud diagrams of stress distribution of each component at the rotation frequency were obtained. Suggestions for improving vibration and reducing noise were made based on the experimental and analytical results

Volume 3 – Conference

We are pleased to present the conference proceedings for the 12th edition of the International Fluid Power Conference (IFK). The IFK is one of the world’s most significant scientific conferences on fluid power control technology and systems. It offers a common platform for the presentation and discussion of trends and innovations to manufacturers, users and scientists. The Chair of Fluid-Mechatronic Systems at the TU Dresden is organizing and hosting the IFK for the sixth time. Supporting hosts are the Fluid Power Association of the German Engineering Federation (VDMA), Dresdner Verein zur Förderung der Fluidtechnik e. V. (DVF) and GWT-TUD GmbH. The organization and the conference location alternates every two years between the Chair of Fluid-Mechatronic Systems in Dresden and the Institute for Fluid Power Drives and Systems in Aachen. The symposium on the first day is dedicated to presentations focused on methodology and fundamental research. The two following conference days offer a wide variety of application and technology orientated papers about the latest state of the art in fluid power. It is this combination that makes the IFK a unique and excellent forum for the exchange of academic research and industrial application experience. A simultaneously ongoing exhibition offers the possibility to get product information and to have individual talks with manufacturers. The theme of the 12th IFK is “Fluid Power – Future Technology”, covering topics that enable the development of 5G-ready, cost-efficient and demand-driven structures, as well as individual decentralized drives. Another topic is the real-time data exchange that allows the application of numerous predictive maintenance strategies, which will significantly increase the availability of fluid power systems and their elements and ensure their improved lifetime performance. We create an atmosphere for casual exchange by offering a vast frame and cultural program. This includes a get-together, a conference banquet, laboratory festivities and some physical activities such as jogging in Dresden’s old town.:Group 8: Pneumatics Group 9 | 11: Mobile applications Group 10: Special domains Group 12: Novel system architectures Group 13 | 15: Actuators & sensors Group 14: Safety & reliabilit

Performance and Safety Enhancement Strategies in Vehicle Dynamics and Ground Contact

Recent trends in vehicle engineering are testament to the great efforts that scientists and industries have made to seek solutions to enhance both the performance and safety of vehicular systems. This Special Issue aims to contribute to the study of modern vehicle dynamics, attracting recent experimental and in-simulation advances that are the basis for current technological growth and future mobility. The area involves research, studies, and projects derived from vehicle dynamics that aim to enhance vehicle performance in terms of handling, comfort, and adherence, and to examine safety optimization in the emerging contexts of smart, connected, and autonomous driving.This Special Issue focuses on new findings in the following topics:(1) Experimental and modelling activities that aim to investigate interaction phenomena from the macroscale, analyzing vehicle data, to the microscale, accounting for local contact mechanics; (2) Control strategies focused on vehicle performance enhancement, in terms of handling/grip, comfort and safety for passengers, motorsports, and future mobility scenarios; (3) Innovative technologies to improve the safety and performance of the vehicle and its subsystems; (4) Identification of vehicle and tire/wheel model parameters and status with innovative methodologies and algorithms; (5) Implementation of real-time software, logics, and models in onboard architectures and driving simulators; (6) Studies and analyses oriented toward the correlation among the factors affecting vehicle performance and safety; (7) Application use cases in road and off-road vehicles, e-bikes, motorcycles, buses, trucks, etc

Vehicle and Traffic Safety

The book is devoted to contemporary issues regarding the safety of motor vehicles and road traffic. It presents the achievements of scientists, specialists, and industry representatives in the following selected areas of road transport safety and automotive engineering: active and passive vehicle safety, vehicle dynamics and stability, testing of vehicles (and their assemblies), including electric cars as well as autonomous vehicles. Selected issues from the area of accident analysis and reconstruction are discussed. The impact on road safety of aspects such as traffic control systems, road infrastructure, and human factors is also considered

30th International Conference on Condition Monitoring and Diagnostic Engineering Management (COMADEM 2017)

Proceedings of COMADEM 201

Development of numerical and experimental tools for the simulation of train braking operations

L'abstract è presente nell'allegato / the abstract is in the attachmen

Aeropropulsion 1987

Papers from the Aeropropulsion '87 Conference, held at the NASA Lewis Research Center (LeRC), are presented. Unclassified presentations by LeRC and NASA Headquarters senior management and many LeRC technical authors covered the philosophy and major directions of the LeRC aeropropulsion program, and presented a broad spectrum of recent research results in materials, structures, internal fluid mechanics, instrumentation and controls, and both subsonic and high-speed propulsion technology