Article/eBook Full Name: Mechanical Behavior of Materials - Engineering Methods for Deformation, Fracture and Fatigue
Author(s): Norman E. Dowling
Edition: Third Edition / Fourth Edition
Publish Date: 2006 / 2012
ISBN: ISBN-13: 978-0131395060 ISBN-10: 0131395068
Published By: Prentice Hall
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Threat evaluations due to bombing and progressive collapse of precast concrete building systems are examined and presented in this report. A prototype structure based on the moment frame building system from PCI-Seismic Design for Precast/Prestressed Concrete Structures is used for these evaluations. Two distinct studies are conducted. The first examines the potential for abrupt failure of the ground level columns due to intentional detonation of explosives; the second examines the potential for progressive collapse of the building system as a result of this loss. Three types of column failures, including brisance failure, flexural failure, and direct shear failure are discussed and evaluated based on blast oad effects. For each failure case, the number of failed columns respect to stand-off ranges
with specified weight of charges is determined by employing UFC-3-340-02. A pictorial representation of the stand-off distances and number of failed columns are provided to assess the combined effects of blast load types with a specified charge weight. The generalized image provides a safe-range for each failure type. This methodology can be used to guide engineers in making enhancement to columns based or safe standoff ranges to ensure that safe operating levels are satisfied. In progressive collapse analysis section, the structure is examined using the procedures of the Unified Facilities Criteria (UFC) and the General Services Administration (GSA). Three model cases are compared: original model, modified model with cantilever continuous beam, and modified model with fixed-fixed continuous beam, analyze progressive collapse responses and make modifications by employing linear static procedure. The current GSA progressive collapse guidelines and UFC progressive collapse design are used for evaluations, and the commercially available structural analysis program ETABS Nonlinear V9.7.1 is utilized to perform example analyses.
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Stability of metal structures: a world view (part 1-4)
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A clear understanding of the effects of torsion on concrete members is essential to the safe, economical design of reinforced and prestressed concrete members. This report begins with a brief and systematic summary of the 180-year history of torsion of structural concrete members, new and updated theories and their applications, and a historical overview outlining the development of research on torsion of structural concrete members. Historical theories and truss models include classical theories of Navier, Saint-Venant, and Bredt; the three-dimensional (3-D) space truss of Rausch; the equilibrium (plasticity) truss model of Nielson as well as Lampert and Thürlimann; the compression field theory (CFT) by Collins and Mitchell; and the softened truss model (STM) by Hsu and Mo.
This report emphasizes that it is essential to the analysis of torsion in reinforced concrete that members should: 1) satisfy the equilibrium condition (Mohr’s stress circle); 2) obey the compatibility condition (Mohr’s strain circle); and 3) establish the constitutive relationships of materials such as the “softened” stress-strain relationship of concrete and “smeared” stress-strain relationship of steel bars. The behavior of members subjected to torsion combined with bending moment, axial load, and shear is discussed. This report deals with design issues, including compatibility torsion, spandrel beams, torsional limit design, open sections, and size effects.
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Dictionary of Building and Civil Engineering: English, German, French, Dutch, Russian
Author: S.N. Korchomkin , S.V. Kurbatov , N.B. Sheikhon and G. B. Viljkovyskaja | Size: 121 MB | Format:PDF | Quality:Unspecified | Publisher: Springer | Year: 2014 (reprint of 1985 ed) | pages: 936 | ISBN: 940157409X ISBN13: 9789401574099
In the last few decades civil engineering has undergone substantial technological change which has, naturally, been refleded in the terminology employed in the industry. Efforts are now being made in many countries to bring about a systematization and unification of technical terminology in general, and tbat of civil engineering in particular. The publication of a multilingual didionary of civil engineering terms has been necessitat ed by the expansion of international cooperation and information exchange in tbis field, as by the lack of suitable updated bilingual didionaries. well as This Didionary contains some 14 000 English terms together with their German, French, Dutch and Russian equivalents, which are used in the main branches of civil engineering and relate to the basic principles of structural design and calculations (the elasticity theory, strength of materials, soi! mechanics and other allied technical disciplines); to buildings and installations, strudures and their parts, building materials and prefabrications, civil engineering tecbnology and practice, building and road construction macbines, construdion site equipment, housing equipment and fittings (includ ing modern systems of air conditioning); as well as to hydrotechni cal and irrigation constructions. The Dictionary also includes a limited number of basic technical expressions and terms relating to allied disciplines such as architecture and town planning, as well as airfield, railway and underground construction. The Dictionary does not Iist trade names of bui Iding materials, parts and machines or the names of chemical compounds. Nor does it give adverbial, adjective or verbal terms.
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Mechanical Vibrations: Theory and Application to Structural Dynamics, Third Edition is a comprehensively updated new edition of the popular textbook. It presents the theory of vibrations in the context of structural analysis and covers applications in mechanical and aerospace engineering. Although keeping the same overall structure, the content of this new edition has been significantly revised in order to cover new topics, enhance focus on selected important issues, provide sets of exercises and improve the quality of presentation. Without being exhaustive (see the Introduction for a comprehensive list), some key features include: a systematic approach to dynamic reduction and substructuring, based on duality between mechanical and admittance concepts; an introduction to experimental modal analysis and identification methods; an improved, more physical presentation of wave propagation phenomena; a comprehensive presentation of current practice for solving large eigenproblems, focusing on the efficient linear solution of large, sparse and possibly singular systems; a deeply revised description of time integration schemes, providing framework for the rigorous accuracy/stability analysis of now widely used algorithms such as HHT and Generalized; solved exercises and end of chapter homework problems; and, a companion website hosting supplementary material. With revised, coherent and uniform notation, Mechanical Vibrations: Theory and Application to Structural Dynamics, Third Edition is a must-have textbook for graduate students working with vibration in mechanical, aerospace and civil engineering, and is also an excellent reference for researchers and industry practitioners.
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