Download or read book Dynamic Strength Properties of Structural Steel at Elevated Rates of Strain written by Matthew P. Murray and published by . This book was released on 2020 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments were conducted on ASTM A572 50 and A992 steel over a range of intermediate strain rates in order to determine material strength properties of structural members subjected to dynamic loadings. The yield and ultimate tensile stress (UTS) of the steels were determined at increasing strain rates using a hydraulic apparatus and compared to static values obtained from ASTM E8 standardized tensile experiments. Results revealed that A572-50 steel exhibited an increase in yield stress of up to 35% and UTS of up to 20% as strain rate increased from 0.002 to 2.0 s-1. A992 steel demonstrated a similar increase in yield stress of up to 45% and UTS of up to 20%. Ratios of dynamic-to-static strengths were used to develop dynamic increase factor curves spanning the range of strain rates studied. These curves provide designers with material property values required for accurate and economical design of protective structures.
Download or read book Effect of Strain Rate on Material Properties of Sheet Steels and Structural Strengths of Cold formed Steel Members written by Maher Kassar and published by . This book was released on 1990 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In structural design, the material properties of steels and the strengths of cold-formed steel members are affected by strain rate. Two subjects were investigated experimentally and analytically in this study. They are 1) effect of strain rate on mechanical properties of sheet steels in tension and compression, and 2) structural strengths of stub columns and beams subjected to dynamic loads. Three sheet steels with nominal yield strengths ranging from 35 to 100 ksi were studied under different strain rates. A total of 124 tensile coupons and 54 compressive coupons were tested in this phase of study. The structural strengths of 37 stub columns and 30 beam specimens fabricated from 35XF sheet steel were investigated in the second phase of this study under different strain rates. The results showed that the material properties as well as the strengths of the structural members increased with the strain rate. The amount of increase was found to be dependent on the material yield strengths and the strain rates used in the tests. The effective width approach included in the current AISI Automotive Steel Design Manual was utilized for the evaluation of member strengths using static and dynamic yield stresses corresponding to the strain rates used in the tests. Good agreement was achieved between the predicted and tested member strengths when using the dynamic yield stresses in the comparison"--Abstract, leaf iii.
Download or read book Dynamic Material Properties of Grade 50 Steel written by Matthew P. Murray and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Properties of Materials at High Rates of Straining Or Loading written by Rowland J. Mainstone and published by . This book was released on 1975 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stability and Ductility of Steel Structures under Cyclic Loading written by Yuhshi Fukumoto and published by CRC Press. This book was released on 1991-12-07 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S.-Japan Joint Seminar on Stability and Ductility of Steel Structures under Cyclic Loading was held in Osaka, Japan on July 1-3, 1991. This three-day seminar was devoted to five main topics: 1) materials properties and plasticity models, which featured experimental investigations of the material properties of structural steels and plasticity models of the material characteristics under dynamic and cyclic loading conditions; 2) experimental observations, which featured experimental studies of cyclic buckling behavior of steel structural members and frames subjected to dynamic and cyclic loading conditions; 3) analytical modeling, which discussed analytical modeling of the cyclic buckling behavior of steel structural members and frames; 4) design implementation, which emphasized earthquake engineering design of steel structures against cyclic buckling; and 5) future research needs, in which future analytical and experimental research needs on the behavior and design of steel structures subjected to dynamic and cyclic loading conditions were identified. This book contains 30 contributed papers presented at the seminar.
Download or read book Dynamic Tests on Selected Structural Steels written by W. L. Cowell and published by . This book was released on 1969 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic tension tests and static tension tests were conducted on four grades of structural steels. The steels conform to ASTM grades A36, A242, A441, and A572. Stress-strain curves are presented for each steel at various strain rates, ranging from static to about 1.5 in./in./sec. While all steels showed an increase in yield stress with increasing strain rates, the A36 steel showed the greatest increase. Design recommendations are given for structural steels subjected to high strain rates. Additional specimens were strain aged, and stress-strain curves were obtained for both dynamic and static tests. Of the strain-aged steels, only the A36 steel showed a significant increase in strength over the non-strain-aged steels, when loaded dynamically. No adverse effects of strain aging were noted on any of the steels. (Author).
Download or read book Dynamic Properties of Materials Part III Steels written by P. Soohoo and published by . This book was released on 1974 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of the literature has been conducted to obtain and compile existing experimental data on the pertinent mechanical properties of steels subject to dynamic loading conditions and under a wide temperature range. Data showing the variation of yield strength and elongation with strain rate and temperature are categorized and tabulated. The effect of the dynamic properties of steels due to strain rate variation at room temperature is shown graphically. Separate curves for steels in tension and compression are presented. A comprehensive reference and bibliography section is provided. The behavior of steels under dynamic loading is generally different from that under static loading. The yield strength is higher under dynamic loading, and it decreases with increasing temperature. (Modified author abstract).
Download or read book Structures to Resist the Effects of Accidental Explosions written by and published by . This book was released on 1991 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling Hot Deformation of Steels written by John G. Lenard and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer Aided Engineering may be defined as an approach to solving tech nological problems in which most or all of the steps involved are automated through the use of computers, data bases and mathematical models. The success of this ap proach, considering hot forming, is tied very directly to an understanding of material behaviour when subjected to deformation at high temperatures. There is general agreement among engineers that not enough is known about that topic -and this gave the initial impetus for the project described in the present study. The authors secured a research grant from NATO (Special Research Grant #390/83) with a mandate to study the "State-of-the-Art of Controlled Rolling". What follows is the result of that study. There are five chapters in this Monograph. The first one, entitled "State-of-the Art of Controlled Rolling" discusses industrial and laboratory practices and research designed to aid in the development of microalloyed steels of superior quality. Follow ing this is the chapter "Methods of Determining Stress-Strain Curves at Elevated Temperatures". The central concern here is the material's resistance to deformation or in other words, its flow strength, the knowledge of which is absolutely essential for the efficient and economical utilization of the computers controlling the rolling process.
Download or read book Dynamic Behavior of Materials written by Marc A. Meyers and published by John Wiley & Sons. This book was released on 1994-10-28 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addresses fundamentals and advanced topics relevant to the behavior of materials under in-service conditions such as impact, shock, stress and high-strain rate deformations. Deals extensively with materials from a microstructure perspective which is the future direction of research today.
Download or read book Optimisation of Both Steel Properties and Autobody Structural Designs for Axial Side and Off Set Impact Loading written by and published by . This book was released on 2002 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Materials at High Strain Rates written by T.Z. Blazynski and published by Springer Science & Business Media. This book was released on 1987-07-31 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Methods for Plasticity written by Eduardo A. de Souza Neto and published by John Wiley & Sons. This book was released on 2011-09-21 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of computational plasticity encapsulates the numerical methods used for the finite element simulation of the behaviour of a wide range of engineering materials considered to be plastic – i.e. those that undergo a permanent change of shape in response to an applied force. Computational Methods for Plasticity: Theory and Applications describes the theory of the associated numerical methods for the simulation of a wide range of plastic engineering materials; from the simplest infinitesimal plasticity theory to more complex damage mechanics and finite strain crystal plasticity models. It is split into three parts - basic concepts, small strains and large strains. Beginning with elementary theory and progressing to advanced, complex theory and computer implementation, it is suitable for use at both introductory and advanced levels. The book: Offers a self-contained text that allows the reader to learn computational plasticity theory and its implementation from one volume. Includes many numerical examples that illustrate the application of the methodologies described. Provides introductory material on related disciplines and procedures such as tensor analysis, continuum mechanics and finite elements for non-linear solid mechanics. Is accompanied by purpose-developed finite element software that illustrates many of the techniques discussed in the text, downloadable from the book’s companion website. This comprehensive text will appeal to postgraduate and graduate students of civil, mechanical, aerospace and materials engineering as well as applied mathematics and courses with computational mechanics components. It will also be of interest to research engineers, scientists and software developers working in the field of computational solid mechanics.
Download or read book Ultimate Limit State Analysis and Design of Plated Structures written by Jeom Kee Paik and published by John Wiley & Sons. This book was released on 2018-04-30 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews and describes both the fundamental and practical design procedures for the ultimate limit state design of ductile steel plated structures The new edition of this well-established reference reviews and describes both fundamentals and practical design procedures for steel plated structures. The derivation of the basic mathematical expressions is presented together with a thorough discussion of the assumptions and the validity of the underlying expressions and solution methods. Furthermore, this book is also an easily accessed design tool, which facilitates learning by applying the concepts of the limit states for practice using a set of computer programs, which can be downloaded. Ultimate Limit State Design of Steel Plated Structures provides expert guidance on mechanical model test results as well as nonlinear finite element solutions, sophisticated design methodologies useful for practitioners in industries or research institutions, and selected methods for accurate and efficient analyses of nonlinear behavior of steel plated structures both up to and after the ultimate strength is reached. Covers recent advances and developments in the field Includes new topics on constitutive equations of steels, test database associated with low/elevated temperature, and strain rates Includes a new chapter on a semi-analytical method Supported by a companion website with illustrative example data sheets Provides results for existing mechanical model tests Offers a thorough discussion of assumptions and the validity of underlying expressions and solution methods Designed as both a textbook and a handy reference, Ultimate Limit State Design of Steel Plated Structures, Second Edition is well suited to teachers and university students who are approaching the limit state design technology of steel plated structures for the first time. It also meets the needs of structural designers or researchers who are involved in civil, marine, and mechanical engineering as well as offshore engineering and naval architecture.
Download or read book Dynamic Tensile Testing of Sheet Steels and Influence of Strain Rate on Strengthening Mechanisms in Sheet Steels written by Denise M. Bruce and published by . This book was released on 2003-07-01 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: The capability to conduct dynamic tensile testing of sheet steels was established and the influence of strain rate on strengthening mechanisms in sheet steels was investigated in this work. Several different automotive sheet steels were studied, including interstitial free (IF) steel, high strength low alloy (HSLA) steel, dual phase steel and transformation induced plasticity (TRIP) steel.
Download or read book Effects of Strain Rate on the Mechanical Properties and Fracture Characteristics of a Dual Phase 980 Steel written by Sukanya Sharma and published by . This book was released on 2019 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dual phase (DP) steels are being increasingly used as structural components in the automotive industry owing to their combination of high strength and moderate ductility.Formability and crash resistance are important mechanical properties that expose the steel to high strain rates.Fracture characteristics of a DP steel at strain rates spanning seven orders of magnitude are investigated using quantitative fractography.The DP steel investigated in this study is comprised of a continuous matrix of martensite with interspersed ferrite islands.The data reveal that the flow stress, uniform strain, and ductility are substantially higher at the higher strain rates.Quantitative fractography, employed to understand the fracture characteristics, shows an increase in the extent of ductile fracture at high strain rates.In this presentation, the results demonstrating high strain rates facilitating dimpled ductile fracture and/or increased resistance to faceted fracture are discussed.
Download or read book Structural Impact written by Norman Jones and published by Cambridge University Press. This book was released on 1997-10-16 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: First time paperback of mechanical engineering reference for professionals.
