Blast Simulator Wall Tests
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Blast Simulator Wall Tests
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Author : Michael G. Oesterle
language : en
Publisher:
Release Date : 2009
Blast Simulator Wall Tests written by Michael G. Oesterle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Loads generated in explosions that result from terrorist attacks and industrial accidents create devastating hazards for buildings and their occupants. The objective of this dissertation is to develop design guidelines and methodologies for protective/hardening strategies used to mitigate blast hazards in reinforced concrete and concrete masonry walls. Commonly, guidelines and methodologies are developed from experimental data. Field testing with live explosive is a reliable experimental method for demonstrating the performance of blast resistant concepts, but it is expensive, time consuming, and often produces low quality data. Static testing is another experimental method that allows researchers to clearly observe behavior and failure modes of structural components; however this too is limited because it cannot account for the rate effects associated with blast loads. The UCSD Blast Simulator was developed to offers an alternative method for testing structures to loads generated in an explosion without the difficulties and limitations associated with field and static testing. For this dissertation, tests were conducted with the blast simulator to study reinforced concrete walls protected with frangible panels, concrete masonry walls strengthened with carbon fiber reinforced polymer composite, and unreinforced masonry walls retrofitted with polyurea catcher systems. The objective of the dissertation was achieved through a succession of tasks that included; the development of a test protocol, validation and implementation of numerical models to predict loads delivered to specimens during blast simulator tests, development of method to correlate blast simulator loads to air blast loads, generation of high quality data on specimens with mitigation strategies for validation of numerical models to predict response of hardened/protected reinforced concrete and concrete masonry walls, and investigation of design variables with parametric studies. The investigation of concrete masonry walls demonstrated that the addition of carbon fiber reinforced polymers can increase the resistance to blast loads, but may result in a brittle failure mode. The study of reinforced concrete walls showed that frangible panels can improve the response by adding mass to the system. Finally, the research performed on unreinforced masonry walls with polyurea catcher emphasized the need for proper connection detailing.
Advancements In Blast Simulator Analysis Demonstrated On A Prototype Wall Structure
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Author : Aaron Freidenberg
language : en
Publisher:
Release Date : 2013
Advancements In Blast Simulator Analysis Demonstrated On A Prototype Wall Structure written by Aaron Freidenberg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
It has been demonstrated that the UCSD Blast Simulator has the capability of generating repeatable heavy impact loading on large structures. The pulse shape and duration of the impact from the hydraulic rams is tailored by careful regulation of the hydraulic pressures (the punch) and additionally by the presence of a particular rubber material (the programmer) at the front of hydraulic rams. A systematic approach was undertaken in order to meet the challenges of incorporating these unique characteristics of the punch and the programmer into experimental data processing and high fidelity computer models of Blast Simulator tests. These new methods were then validated through a test series consisting of ten prototype wall tests and corresponding computer simulations. Additionally, important insight was gained with regard to the effectiveness of this particular prototype wall system as a hardening strategy, and in further demonstrating the capability of the Blast Simulator in generating blast-like loading on wall systems.
Blast Simulator Project
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Author :
language : en
Publisher:
Release Date : 2014
Blast Simulator Project written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The Blast Simulator project involves the development of an apparatus able to reproduce the effects of a blast pressure wave on large scale structural components (such as columns, walls, etc.) with the objective to improve their strength in these severe loading situations. This technical report presents the setting up and the performance assessment of the prototype blast actuator developed at the JRC. The first preliminary tests performed have been described and evaluated. Satisfactory results have been obtained with respect to impacting masses and velocities and with the finally obtained pressure values.
Electrical Blast Simulator E Blast
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Author :
language : en
Publisher:
Release Date : 2015
Electrical Blast Simulator E Blast written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
The Electrical Blast Simulator (e-BLAST) activity involves the development of an apparatus capable of reproducing the effects of a blast pressure wave on large-scale structural components (such as columns, walls, etc.) with the objective of improving their strength in such severe loading situations. The work relates to the BUILT-CIP project which deals with the protection and resilience of the built environment (critical buildings, transportation and energy infrastructure etc.) under catastrophic events such as blast and impacts. The e-BLAST facility has been conceived and designed with the expertise acquired in the previous project "Blast Simulation Technology Development", supported through an Administrative Arrangement by DG HOME. Differently from the prototype developed in that project, the e-BLAST exploits a recent technology that appears to be very promising in this particular research field. Specifically, three synchronous electrical linear motors have been adopted for accelerating the impacting masses. This choice has led to develop a more effective, versatile and low-cost facility. The report presents in detail the facility design, its components and their assembly, and a series of preliminary tests carried out in the ELSA laboratory in order to assess the performance of the e-BLAST. Finally, a brief description of further developments and feasible large-scale structural tests, planned to be performed with the new facility, are discussed.
Design Against Blast
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Author : S. Syngellakis
language : en
Publisher: WIT Press
Release Date : 2013
Design Against Blast written by S. Syngellakis and has been published by WIT Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Technology & Engineering categories.
Terrorist attacks and other destructive incidents caused by explosives have, in recent years, prompted considerable research and development into the protection of structures against blast loads. For this objective to be achieved, experiments have been performed and theoretical studies carried out to improve our assessments of the intensity as well as the space-time distribution of the resulting blast pressure on the one hand and the consequences of an explosion to the exposed environment on the other.This book aims to enhance awareness on and understanding of these topical issues through a collection of relevant, Transactions of the Wessex Institute of Technology articles written by experts in the field. The book starts with an overview of key physics-based algorithms for blast and fragment environment characterisation, structural response analyses and structural assessments with reference to a terrorist attack in an urban environment and the management of its inherent uncertainties.A subsequent group of articles is concerned with the accurate definition of blast pressure, which is an essential prerequisite to the reliable assessment of the consequences of an explosion. Other papers are concerned with alternative methods for the determination of blast pressure, based on experimental measurements or neural networks. A final group of articles reports investigations on predicting the response of specific structural entities and their contents.The book concludes with studies on the effectiveness of steel-reinforced polymer in improving the performance of reinforced concrete columns and the failure mechanisms of seamless steel pipes used in nuclear industry.
The Ucsd Blast Simulator
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Author :
language : en
Publisher:
Release Date : 2008
The Ucsd Blast Simulator written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Earthquake simulators categories.
Handbook For Blast Resistant Design Of Buildings
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Author : Donald O. Dusenberry
language : en
Publisher: John Wiley & Sons
Release Date : 2010-01-26
Handbook For Blast Resistant Design Of Buildings written by Donald O. Dusenberry and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-01-26 with Technology & Engineering categories.
Unique single reference supports functional and cost-efficient designs of blast resistant buildings Now there's a single reference to which architects, designers, and engineers can turn for guidance on all the key elements of the design of blast resistant buildings that satisfy the new ASCE Standard for Blast Protection of Buildings as well as other ASCE, ACI, and AISC codes. The Handbook for Blast Resistant Design of Buildings features contributions from some of the most knowledgeable and experienced consultants and researchers in blast resistant design. This handbook is organized into four parts: Part 1, Design Considerations, sets forth basic principles, examining general considerations in the design process; risk analysis and reduction; criteria for acceptable performance; materials performance under the extraordinary blast environment; and performance verification for technologies and solution methodologies. Part 2, Blast Phenomena and Loading, describes the explosion environment, loading functions needed for blast response analysis, and fragmentation and associated methods for effects analysis. Part 3, System Analysis and Design, explains the analysis and design considerations for structural, building envelope, component space, site perimeter, and building system designs. Part 4, Blast Resistant Detailing, addresses the use of concrete, steel, and masonry in new designs as well as retrofitting existing structures. As the demand for blast resistant buildings continues to grow, readers can turn to the Handbook for Blast Resistant Design of Buildings, a unique single source of information, to support competent, functional, and cost-efficient designs.
Structures Under Shock And Impact Xii
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Author : G. Schleyer
language : en
Publisher: WIT Press
Release Date : 2013
Structures Under Shock And Impact Xii written by G. Schleyer and has been published by WIT Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Technology & Engineering categories.
Of interest to engineers from civil, military, nuclear, offshore, aeronautical, transportation and other backgrounds, this book contains the proceedings of a well-established conference on the subject that was first held in 1989. Topics covered include: Impact and Blast Loading Characteristics; Protection of Structures from Blast Loads; Energy Absorbing Issues; Structural Crashworthiness; Hazard Mitigation and Assessment; Behaviour of Steel Structures; Behaviour of Structural Concrete; Material Response to High Rate Loading; Seismic Engineering Applications; Interaction Between Computational and Experimental Results; Innovative Materials and Material Systems; Fluid Structure Interaction.The shock and impact behaviour of structures presents challenges to researchers not only because it has obvious time-dependent aspects, but also because it is difficult to specify the external dynamic loading characteristics and to obtain the full dynamic properties of materials. It is crucial that we find ways to share the contributions and understanding that are developing from various theoretical, numerical and experimental studies, as well as investigations into material properties under dynamic loading conditions. This book helps to meet that need.
Recent Trends In Cold Formed Steel Construction
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Author : Cheng Yu
language : en
Publisher: Elsevier
Release Date : 2023-11-04
Recent Trends In Cold Formed Steel Construction written by Cheng Yu and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-11-04 with Architecture categories.
Recent Trends in Cold-Formed Steel Construction, Second Edition focuses on the application and use of this important construction material. In this updated edition, new chapters take on these developments, offering updates on cutting-edge new technologies and design methods for using cold-formed steel as a structural material and providing technical guidance on how to design and build sustainable and energy-efficient cold-formed steel buildings. Sections introduce codes, specifications and design methods, provide computational analysis of cold-formed steel structures, examine the structural performance of cold-formed steel buildings, and review thermal performance, acoustic performance, fire protection, floor vibrations and blast resistance. Over the last few years, there has been major breakthroughs for cold-formed steel design with modular building applications now becoming more widely accepted. Other scientific developments include research on system reliability applications, AI machine learning, and the use of high strength steel, as well as new connection methods and changes in DSM codes. Addresses building science issues and provides performance solutions for the design of cold-formed steel buildings Provides guidance for using next generation design methods, computational tools and technologies Edited by an experienced researcher and educator with significant knowledge on new developments in cold-formed steel construction Covers new developments such as modular construction, machine learning and code developments in Europe, Australia and China
Structures Under Shock And Impact X
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Author : Norman Jones
language : en
Publisher: WIT Press
Release Date : 2008
Structures Under Shock And Impact X written by Norman Jones and has been published by WIT Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Technology & Engineering categories.
This text examines the interaction between blast pressure and surface or underground structures, whether the blast is from civilian, military, dust and natural explosions, or any other source.