Influence of Local Site Conditions on the Reliability of Fundamental-Mode Surface Wave Inversion Method
Geotechnical Testing Journal, Vol. 32, No. 5, pp. 428-437
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Caveats in Multi-modal Inversion of Seismic Surface Wavefields
Pure and Applied Geophysics
Volume 163, Number 7 (2006), 1215-1233
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As steel reinforced concrete has got wide range of applications, this project is an attempt to study the dynamic behavior of steel reinforced concrete subjected to blast and pressure loadings using a non-linear finite element code LS-DYNA (version 971). The aim of this project was to analyze various parameters of a steel reinforced concrete slab by validating three of the concrete material models in LS-DYNA.
The first part of the project consists of validating three concrete material models in LS-DYNA by applying boundary conditions on simple single elements. The next part consists of using these three concrete material models of LS-DYNA (version 971) for the study of blast and pressure load analysis on a steel reinforced concrete slab for two different strengths of concrete with two different mesh sizes.
The main purpose of this analysis was to provide the behavior of these concrete material models subjected to blast loads, which would be a better guide for future applications.
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LS-DYNA for Beginners: An insight into Ls-Prepost and Ls-Dyna
Author: Qasim Shah (Author), Hasan Abid (Author) | Size: ? MB | Format:PDF | Quality:Unspecified | Publisher: LAP LAMBERT Academic Publishing | Year: 2012 | pages: 152 | ISBN: 3846556777-978-3846556771
LS-DYNA is one of the best explicit Finite Element application software made by Livermore Software Technology Corporation (LSTC)which is used by engineers to predict the consequences of impact, crash, and other dynamic loads on structures. Vibrations, fluid flow, fluid structure interaction and many other engineering problems can be solved using LS-DYNA. This book guides a beginner by presenting a step by step procedure to solve problems of diverse nature using LS-PrePost and LS-Dyna. A lot of necessary information is contained in 18 chapters that would enable the engineers to solve various problems. This book is especially designed to help the senior undergraduate and post graduate engineering students in the field of mechanical, manufacturing and civil engineering to facilitate them in their research projects.
Editorial Reviews
About the Author
Dr. Qasim H. Shah is Associate Professor at the Department of Mechanical Engineering, International Islamic University Malaysia. His research interests include predicting the damage and failure of structural elements subjected to dynamic loads like impacts, explosions, and fluid structure interactions.
This test method provides a stress-strain response of the soil in situ. A pressuremeter modulus and a limit pressure is obtained for use in geotechnical analysis and foundation design.
The results of this test method are dependent on the degree of disturbance during drilling of the borehole and insertion of the pressuremeter probe. Since disturbance cannot be completely eliminated, the interpretation of the test results should include consideration of conditions during drilling. This disturbance is particularly significant in very soft clays and very loose sands. Disturbance may not be eliminated completely but should be minimized for the prebored pressuremeter design rules to be applicable.
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fib Bulletin 40 deals mainly with the use of FRP bars as internal reinforcement for concrete structures. The background of the main physical and mechanical properties of FRP reinforcing bars is presented, with special emphasis on durability aspects. For each of the typical ultimate and serviceability limit states, the basic mechanical model is given, followed by different design models according to existing codes or design guidelines.
Composite FRP materials are still relatively new in construction and most engineers are unfamiliar with their properties and characteristics. The second chapter of this bulletin therefore aims to provide practising engineers with the necessary background knowledge in this field, and also presents typical products currently available in the international market.
The third chapter deals with the issue of durability and identifies the parameters that can lead to deterioration, which is necessary information when addressing design issues. A series of parameters is used to identify the allowable stress in the FRP after exposure for a specified period of time in a specific environment.
The bulletin covers the issues of Ultimate Limit States (primarily dealing with flexural design), Serviceability Limit States (dealing with deflections and cracking), Shear and Punching Shear and Bond and Tension Stiffening. It provides not only the state-of-the-art but also in many cases ideas for the next generation of design guidelines.
The final chapter deals with the fundamental issue of design philosophy. The use of these new materials as concrete reinforcement has forced researchers to re-think many of the fundamental principles used until now in RC design. The bulletin ends with a discussion of a possible new framework for developing partial safety factors to ensure specific safety levels that will be flexible enough to cope with new materials.
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The prediction of failures involves uncertainty, and problems associated with failures are inherently probabilistic. Their solution requires optimal tools to analyze strength of evidence and understand failure events and processes to gauge confidence in a design’s reliability.
Reliability Engineering and Risk Analysis: A Practical Guide, Second Edition has already introduced a generation of engineers to the practical methods and techniques used in reliability and risk studies applicable to numerous disciplines. Written for both practicing professionals and engineering students, this comprehensive overview of reliability and risk analysis techniques has been fully updated, expanded, and revised to meet current needs. It concentrates on reliability analysis of complex systems and their components and also presents basic risk analysis techniques. Since reliability analysis is a multi-disciplinary subject, the scope of this book applies to most engineering disciplines, and its content is primarily based on the materials used in undergraduate and graduate-level courses at the University of Maryland. This book has greatly benefited from its authors' industrial experience. It balances a mixture of basic theory and applications and presents a large number of examples to illustrate various technical subjects. A proven educational tool, this bestselling classic will serve anyone working on real-life failure analysis and prediction problems.
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Author: Kenneth Button, Henry Vega, Peter Nijkamp | Size: 3.8 MB | Format:PDF | Quality:Unspecified | Publisher: Edward Elgar Pub | Year: 2011 | pages: 540 | ISBN: 9781843763758
This concise and clearly focused Dictionary, with contributions by the leading authorities in their fields, brings order and clarity to a topic that can suffer from confusion over terminology and concepts. It provides a bridge between the academic disciplines involved and illustrates the application of transportation policy that crosses a variety of administrative divisions. Cutting through jargon, the entries concentrate on the social science aspects of transportation analysis, defining many of the terms used in transportation, and providing valuable information on some of the major institutions and technologies affecting this sector This concise and comprehensive Dictionary will be an invaluable addition to libraries and research institutes and a helpful resource for anyone with an interest in the analysis of transport.
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