Download or read book Inelastic Deformation of Metal Matrix Composites written by Clifford Jesse Lissenden and published by . This book was released on 1993 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inelastic Deformation of Metal Matrix Composites written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-25 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical model capable of predicting the thermomechanical response of continuously reinforced metal matrix composite laminates subjected to multiaxial loading was developed. A micromechanical model is used in conjunction with nonlinear lamination theory to determine inelastic laminae response. Matrix viscoplasticity, residual stresses, and damage to the fiber/matrix interfacial zone are explicitly included in the model. The representative cell of the micromechanical model is considered to be in a state of generalized plane strain, enabling a quasi two-dimensional analysis to be performed. Constant strain finite elements are formulated with elastic-viscoplastic constitutive equations. Interfacial debonding is incorporated into the model through interface elements based on the interfacial debonding theory originally presented by Needleman, and modified by Tvergaard. Nonlinear interfacial constitutive equations relate interfacial tractions to displacement discontinuities at the interface. Theoretical predictions are compared with the results of an experimental program conducted on silicon carbide/titanium (SiC/Ti) unidirectional, (O4), and angle-ply, (+34)(sub s), tubular specimens. Multiaxial loading included increments of axial tension, compression, torque, and internal pressure. Loadings were chosen in an effort to distinguish inelastic deformation due to damage from matrix plasticity and separate time-dependent effects from time-independent effects. Results show that fiber/matrix debonding is nonuniform throughout the composite and is a major factor in the effective response. Also, significant creep behavior occurs at relatively low applied stress levels at room temperature. Lissenden, C. J. and Herakovich, C. T. and Pindera, M-J. Unspecified Center NASA-CR-191522, AM-93-03, NAS 1.26:191522 NAG1-745; RTOP 506-73-43-03...
Download or read book Inelastic Deformation of Metal Matrix Composites Plasticity and Damage Mechanisms Part 2 written by and published by . This book was released on 1992 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inelastic Deformation of Metal Matrix Composites Part 1 Plasticity and Damage Mechanisms written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-08 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deformation mechanisms of a Ti 15-3/SCS6 (SiC fiber) metal matrix composite (MMC) were investigated using a combination of mechanical measurements and microstructural analysis. The objectives were to evaluate the contributions of plasticity and damage to the overall inelastic response, and to confirm the mechanisms by rigorous microstructural evaluations. The results of room temperature experiments performed on 0 degree and 90 degree systems primarily are reported in this report. Results of experiments performed on other laminate systems and at high temperatures will be provided in a forthcoming report. Inelastic deformation of the 0 degree MMC (fibers parallel to load direction) was dominated by the plasticity of the matrix. In contrast, inelastic deformations of the 90 degree composite (fibers perpendicular to loading direction) occurred by both damage and plasticity. The predictions of a continuum elastic plastic model were compared with experimental data. The model was adequate for predicting the 0 degree response; however, it was inadequate for predicting the 90 degree response largely because it neglected damage. The importance of validating constitutive models using a combination of mechanical measurements and microstructural analysis is pointed out. The deformation mechanisms, and the likely sequence of events associated with the inelastic deformation of MMCs, are indicated in this paper. Majumdar, B. S. and Newaz, G. M. Unspecified Center...
Download or read book Inelastic Deformation of Metal Matrix Composites written by Bhaskar S. Majumdar and published by . This book was released on 1992 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling and Analysis of High Temperature Inelastic Deformation in Metal Matrix Composites written by Rahul S. Shah and published by . This book was released on 1991 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inelastic Deformation Mechanisms in SCS 6 Ti 15 3 MMC Lamina Under Compression written by and published by . This book was released on 1993 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inelasticity and Micromechanics of Metal Matrix Composites written by George Voyiadjis and published by Elsevier. This book was released on 2017-05-04 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains fifteen papers based on the presentations made at the symposium on "Inelasticity and Micromechanics of Metal Matrix Composites" held at the University of Washington, USA, in mid-1994. The papers represent the most recent work conducted on inelasticity and micromechanics of metal matrix composites. The book is divided into two parts: Part I deals with the study of inelastic deformation in metal matrix composites, while Part II tackles the micromechanical aspects of metal matrix composites. The articles discuss different aspects of these two topics ranging from purely theoretical treatments to extensive experimental investigations. Many of the papers are by prominent researchers working in this area.
Download or read book Inelastic Deformation of Composite Materials written by George J. Dvorak and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer composites were introduced for the aerospace industry as light, strong, stiff materials, and adopted by the construction and automobile industries, among others. Meanwhile, composite materials have been introduced to fulfill the uses that these conventional materials could not, such as in extreme environments. The research for new composites includes not only new polymer systems, but metals, ceramics and intermetallic systems as well. This volume contains a selection of recent work by leading researchers in micromechanics on the topics of prediction of overall properties of elastic, perfectly bonded systems, problems associated with inelastic deformation of the phase, debonding at interfaces and growth of distributed damage. Many familiar aspects of mechanical behavior, such as fatigue, fracture, strength and buckling, etc. have been reexamined and adapted for these new systems.
Download or read book Inelastic Deformation Mechanisms in SCS 6 Ti 15 3 Metal Matrix Composite MMC Lamina Under Compression written by FW. Brust and published by . This book was released on 1996 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was undertaken to study the inelastic deformation mechanisms in [0]8 and [90]8 Ti 15-3/SCS-6 lamina subjected to pure compression. Monotonic tests were conducted at room temperature (RT), 538°C, and 650°C. Results indicate that mechanical response and deformation characteristics were different in monotonic tension and compression loading whereas some of those differences could be attributed to residual stress effects. There were other differences because of changes in damage and failure modes. The inelastic deformation in the [0]8 lamina under compression was controlled primarily by matrix plasticity, although some evidence of fiber-matrix debonding was observed. Failure of the specimen in compression was due to fiber buckling in a macroscopic shear zone (the failure plane). The inelastic deformation mechanisms under compression in [90]8 lamina were controlled by radial fiber fracture, matrix plasticity, and fiber-matrix debonding. The radial fiber fracture was a new damage mode observed by MMCs. Constitutive response was predicted for both the [0]8 and [90]8 laminae, using AGLPLY, METCAN, and Battelle's Unit Cell FEA model. Results from the analyses were encouraging.
Download or read book Inelastic Deformation of Composite Materials written by and published by . This book was released on 1991 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer composites were introduced for the aerospace industry as light, strong, stiff materials, and adopted by the construction and automobile industries, among others. Meanwhile, composite materials have been introduced to fulfill the uses that these conventional materials could not, such as in extreme environments. The research for new composites includes not only new polymer systems, but metals, ceramics and intermetallic systems as well. This volume contains a selection of recent work by leading researchers in micromechanics on the topics of prediction of overall properties of elastic, perfectly bonded systems, problems associated with inelastic deformation of the phase, debonding at interfaces and growth of distributed damage. Many familiar aspects of mechanical behavior, such as fatigue, fracture, strength and buckling, etc. have been reexamined and adapted for these new systems.
Download or read book Metal Matrix Composites written by International Conference on Composite Materials and published by Woodhead Publishing. This book was released on 1993 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inelastic Deformation of Metals written by Donald C. Stouffer and published by John Wiley & Sons. This book was released on 1996-01-05 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a totally new approach, this groundbreaking book establishesthe logical connections between metallurgy, materials modeling, andnumerical applications. In recognition of the fact that classicalmethods are inadequate when time effects are present, or whencertain types of multiaxial loads are applied, the new, physicallybased state variable method has evolved to meet these needs.Inelastic Deformation of Metals is the first comprehensivepresentation of this new technology in book form. It developsphysically based, numerically efficient, and accurate methods forpredicting the inelastic response of metals under a variety ofloading and environmental conditions. More specifically, Inelastic Deformation of Metals: * Demonstrates how to use the metallurgical information to developmaterial models for structural simulations and low cyclic fatiguepredictions. It presents the key features of classical and statevariable modeling, describes the different types of models andtheir attributes, and provides methods for developing models forspecial situations. This book's innovative approach covers such newtopics as multiaxial loading, thermomechanical loading, and singlecrystal superalloys. * Provides comparisons between data and theory to help the readermake meaningful judgments about the value and accuracy of aparticular model and to instill an understanding of how metalsrespond in real service environments. * Analyzes the numerical methods associated with nonlinearconstitutive modeling, including time independent, time dependentnumerical procedures, time integration schemes, inversiontechniques, and sub-incrementing. Inelastic Deformation of Metals is designed to give theprofessional engineer and advanced student new and expandedknowledge of metals and modeling that will lead to more accuratejudgments and more efficient designs. In contrast to existing plasticity books, which discuss few if anycorrelations between data and models, this breakthrough volumeshows engineers and advanced students how materials and modelsactually do behave in real service environments. As greater demandsare placed on technology, the need for more meaningful judgmentsand more efficient designs increases dramatically. Incorporatingthe state variable approach, Inelastic Deformation of Metals: * Provides an overview of a wide variety of metal responsecharacteristics for rate dependent and rate independent loadingconditions * Shows the correlations between the mechanical response propertiesand the deformation mechanisms, and describes how to use thisinformation in constitutive modeling * Presents different modeling options and discusses the usefulnessand limitations of each modeling approach, with material parametersfor each model * Offers numerous examples of material response and correlationwith model predictions for many alloys * Shows how to implement nonlinear material models in stand-aloneconstitutive model codes and finite element codes An innovative, comprehensive, and essential book, InelasticDeformation of Metals will help practicing engineers and advancedstudents in mechanical, aerospace, civil, and metallurgicalengineering increase their professional skills in the moderntechnological environment.
Download or read book Constitutive Response and Deformation Mechanisms in Unidirectional Metal Matrix Composites Under Compression written by GM. Newaz and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was undertaken to evaluate the constitutive response and in-elastic deformation characteristics in titanium-based metal matrix composites (MMC) with two types of ceramic fibers, namely, SCS-6 and Sigma. The titanium matrix was Beta 21S, currently named TIMETAL-21S. Monotonic tests were conducted at room temperature (RT) and between 483 and 815°C. The inelastic deformation in the [0]8 lamina under compression was controlled primarily by matrix plasticity, although some evidence of fiber-matrix debonding was observed. The inelastic deformation mechanisms under compression in [90]8 lamina were primarily due to radial fiber cracking from the core for the SCS-6 fiber and fiber-matrix debonding. However, for the Sigma fiber, radial cracking was absent. The effect of temperature on degradation of mechanical properties such as modulus and yield strength for the composites with two different fibers were compared.
Download or read book Thermomechanical Cyclic Deformation of Metal Matrix Composites written by M. Karayaka and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A constitutive model is developed for unreinforced Al2xxx-T4 and silicon-carbide particulate (SiCp) reinforced Al2xxx-T4. Its capabilities are also outlined for predicting the cyclic, isothermal, and thermomechanical behaviors of the composite and its constituents. The constitutive model for unreinforced Al2xxx-T4 is also a unified model, because it combines creep and plastic strains as inelastic strains. The unified model for the matrix is combined with Eshelby's equivalent inclusion theory, which is modified to handle finite volume fraction and inelastic deformation, to simulate the behavior of the reinforced material. The behavior of Al2xxx-T4 (reinforced with 20% volume fraction of SiCp) was simulated at temperatures ranging from 20 to 300°C and strain rates of 3.10-5 1/s to 3.10-3 1/s. The model predicts the strengthening of the composite relative to the unreinforced matrix for isothermal and thermomechanical loading conditions.
Download or read book Inelastic Deformation of Titanium Matrix Composites Under Multiaxial Loading written by CT. Herakovich and published by . This book was released on 1996 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical model capable of predicting the thermomechanical response of continuously reinforced, titanium matrix composite (TMC) laminates, subjected to multiaxial loading has been developed. The model is based on micromechanics and employs classical lamination theory to determine inelastic response. The constitutive relationships for each lamina are determined from a micromechanics analysis that is performed numerically using the finite element method. Matrix viscoplasticity, thermal stresses, and damage to the fiber/ matrix interfacial zone are explicitly included in the model.
Download or read book IUTAM Symposium on Inelastic Deformation of Composite Materials Held in Troy New York on 29 May 1 June 1990 written by and published by . This book was released on 1991 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last 25 years, the science and technology of composite materials have experienced a period of substantial development. Composite materials have been introduced, or are expected to serve, in many functions which cannot be fulfilled by conventional materials, particularly in extreme environments. The research focus has been broadened to include not only new polymer system, but also metal matrix composites, intermetallic compounds and ceramic materials. This has brought forth a number of new problems in fabrication and processing, and in analysis of composite material behavior and properties. The latter set of problems is usually approached by various micromechanical techniques. In recent years, their scope has been expanded from prediction of overall properties of elastic, perfectly bonded systems, to include problems associated with inelastic deformation of the phases, debonding at interfaces, and growth of distributed damage. Many familiar aspects of mechanical behavior, such as fracture, fatigue, compressive strength and buckling have been reexamined and adapted for application to the new material systems.
