Article/eBook Full Name: IMPROVEMENT OF DYNAMIC PROPERTIES AND SEISMIC RESPONSE OF CLAY USING FIBER REINFORCEMENT
Author(s): Amir Faryar, Behzad
Edition: Dissertation
Publish Date: 2012
Published By: University of Maryland (College Park, Md.)
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(when trying to download the publication from the mentioned web site, I receive a notice saying "Restricted Access", but maybe there is someone not having the same problem - the thesis has been downloaded 50 times already)
Nonlinear phenomena should play a crucial role in the design and control of engineering systems and structures as they can drastically change the prevailing dynamical responses.
This book covers theoretical and applications-based problems of nonlinear dynamics concerned with both discrete and continuous systems of interest in civil and mechanical engineering. They include pendulum-like systems, slender footbridges, shape memory alloys, sagged elastic cables and non-smooth problems.
Pendulums can be used as a dynamic absorber mounted in high buildings, bridges or chimneys. Geometrical nonlinearities introduced by pendulum motion may change the system dynamics, and entail a rapid increase of the oscillations of both the structure and the pendulum, leading to full pendulum rotation or chaotic dynamics. To magnetorheological damping is proposed.
Nonlinear mechanics has to be used to explain undesired response in slender footbridges, such as that occurred in the famous event of the London Millenium Bridge. The observed phenomena can be explained by an analytical nonlinear discrete-time model.
Shape memory alloys (SMAs) exhibit very interesting nonlinear thermo-mechanical properties such as shape memory effect and superelasticity. SMA elements integrated within composite beams or plates can be used for active modification of structure properties e.g. by affecting their natural frequencies.
Finite amplitude, resonant, forced dynamics of sagged, horizontal or inclined, elastic cables have recently undergone meaningful research advances concerned with modelling, analysis, response, and nonlinear/nonregular phenomena. A variety of features of nonlinear multimodal interaction in different resonance conditions are comparatively addressed.
Non-smooth systems are very common in engineering practice. Three mechanical engineering problems are presented: (i) a vibro-impact system in the form of a moling device, (ii) the influence of the opening and closing of a fatigue crack on the host system dynamics, and (iii) nonlinear interactions between a rotor and snubber ring system.
This book is aimed at a wide audience of engineers and researchers working in the field of nonlinear structural vibrations and dynamics, and undergraduate and postgraduate students reading mechanical, aerospace and civil engineering.
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Contact mechanics is an active research area with deep theoretical and numerical roots. The links between nonsmooth analysis and optimization with mechanics have been investigated intensively during the last decades, especially in Europe. The study of complementarity problems, variational -, quasivariational- and hemivariational inequalities arising in contact mechanics and beyond is a hot topic for interdisciplinary research and cooperation. The needs of industry for robust solution algorithms suitable for large scale applications and the regular updates of the respective elements in major commercial computational mechanics codes, demonstrate that this interaction is not restricted to the academic environment. The contributions of this book have been selected from the participants of the CMIS 2009 international conference which took place in Crete and continued a successful series of specialized contact mechanics conferences.
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The Grouting Handbook: A Step-by-Step Guide for Foundation Design and Machinery Installation
Author: Donald M. Harrison | Size: 26.4 MB | Format:PDF | Quality:Unspecified | Publisher: Elsevier | Year: 2013 | pages: 222 | ISBN: 9780124165854, 0124165850
Minimize loss of revenue and the downtime of critical assets by avoiding foundation cracking, poor bonds, and initial alignment changes. After their successful introduction as a maintenance material, machinery grouts are now being used for equipment placement in new construction.
While certainly suitable for both markets and applications, a successful installation depends on proper grout selection, application, foundation preparation, and forming methods. Therefore, guidelines on their uses and limitations are needed for engineers and maintenance personnel.
Based on 45 years of field experience, The Grouting Handbook collects a vast amount of information into a practical and user-friendly reference for mechanical and civil engineers. The book focuses on four basic elements of grouting:
• The soil and its load-carrying capability;
• The foundation and its mass, design, concrete mix, installation and curing procedures;
• Anchor bolt technology, design and installation;
• Epoxy grout comparison, material selection and installation.
From the ground up, The Grouting Handbook takes you step by step through the grouting process. Clear, straightforward directions give you details on preparing the foundation and surface and selecting the best material and method. Comprehensive yet concise, this is a convenient handbook for veteran and rookie engineers alike.
• Organizes a comprehensive amount of information into an easy-to-use reference
• Provides advice for selecting the proper grouting material and method for the task at hand
• Contains tips and practical solutions for common problems
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Author: Jeremy P. Ingham | Size: 31.2 MB | Format:PDF | Quality:Unspecified | Publisher: Manson Publishing | Year: 2013 | pages: 192 | ISBN: 0124072305
Geomaterials, or geologically derived materials, are of enormous economic importance to the global construction industry. If you are a geologist or petrographer who provides consultation to architects, civil engineers, and construction engineers, you must have the knowledge and expertise of the features and applications of geomaterials to provide accurate and safe recommendations.
This is the first guide to the petrography of geomaterials, making the petrographer's specialist knowledge available to you in a single source. More than 350 full-color and captioned photos provide concise explanations of petrographic properties of geomaterials and how to interpret them-arming you with the tools to identify the highest quality geomaterials and how they are used in the construction industry.
- Provides a summary of the properties and classifications of geomaterials - Includes more than 350 color and captioned photographs plus 35 tables, line drawings and diagrams - Provides an overview of geomaterials practice and a state of the art review of petrographic techniques
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The consequences of a large dam failing can be disastrous. However, predicting the performance of concrete dams during earthquakes is one of the most complex and challenging problems in structural dynamics.
Based on a nonlinear approach, Seismic Safety Evaluation of Concrete Dams allows engineers to build models that account for nonlinear phenomena such as vertical joint slippage, cracks, and cavitation. This yields more accurate estimates. Advanced but readable, this book is the culmination of the work carried out by Tsinghua University Research Group on Earthquake Resistance on Dams over the last two decades.
• Nonlinearity characteristics of high concrete dams, seismic analysis methods, evaluation models
• A systematic approach to nonlinear analysis and seismic safety evaluation of concrete dams
• Includes nonlinear fracture of dam-water-foundation interaction system, dynamic fluid-structure and
• Covers soil-structure interactions, and meso-scale mechanical behavior of concrete are all international front issues of the field.
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Posted by: 88FeNIX - 11-01-2013, 06:27 AM - Forum: Archive
- No Replies
Dear All,
I specifically need this paper:-
Title: Stress-Strain Curves for Unconfined and Confined Concrete Masonry
Author(s): M. J. N. Priestley and D. M. Elder
Publication: Journal Proceedings
Volume: 80
Issue: 3
Pages: 192-201
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BTW Vol. 80 issue 1-2 is available in forum, just in case anyone wants to refer to it:-
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Erosion is the most common cause of failures at earth-dams, dikes and levees, whether through overtopping and overflowing, or internal erosion and piping. This book is dedicated to the phenomenon of internal erosion and piping. It is not intended to be exhaustive on the subject, but brings together some of the latest international research and advances. Emphasis is placed on physical processes, how they can be studied in the laboratory, and how test results can be applied to levees and dams. The results from several research projects in Australia, France, the Netherlands and the United States are covered by the authors. Our aim has been to share our most recent findings with students, researchers and practitioners. Understanding the failure of an earth-dam or a levee by erosion in a unified framework, whether internal erosion or surface erosion, requires continuous research in this field. We hope that the reader will gain knowledge from this book that leads to further progress in the challenging field of the safety of levees and dams.
Contents
1. State of The Art on the Likelihood of Internal Erosion of Dams and Levees by Means of Testing, Robin Fell and Jean-Jacques Fry.
2. Contact Erosion, Pierre Philippe, Rémi Beguin and Yves-Henri Faure.
3. Backward Erosion Piping, Vera Van Beek, Adam Bezuijen and Hans Sellmeijer.
4. Concentrated Leak Erosion, Stéphane Bonelli, Robin Fell and Nadia Benahmed.
5. Relationship between the Erosion Properties of Soils and Other Parameters, Robin Fell, Gregory Hanson, Gontran Herrier, Didier Marot and Tony Wahl.
About the Authors
Stéphane Bonelli is a Research Professor at Irstea (French Environmental Sciences and Technologies Research Institute) in Aix-en-Provence, France. He has over 20 years of teaching and research experience, and has been a member of the ICOLD (International Commission on Large Dams) European Working Group on Internal Erosion since 2005. He has participated in 19 large dam reviews in France (visual inspection, monitoring data analysis and numerical modeling). His current activities include research, teaching and consultancy, focusing on soil erosion and the processes of levee breach.
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