Inelastic Deformation of Metals

Inelastic Deformation of Metals
Author: Donald C. Stouffer
Publisher: John Wiley & Sons
Total Pages: 522
Release: 1996-01-05
Genre: Technology & Engineering
ISBN: 9780471021438

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.

Inelastic Analysis of Structures

Inelastic Analysis of Structures
Author: Milan Jirasek
Publisher: John Wiley & Sons
Total Pages: 770
Release: 2001-12-21
Genre: Technology & Engineering
ISBN: 9780471987161

Hat ein Werkstoff seine Elastizitatsgrenze erreicht, so verhalt er sich inelastisch. Ingenieure und Designer mussen wissen, mit welchen Eigenschaften dann zu rechnen ist. Dieser Band vermittelt Ihnen den aktuellen Wissensstand auf dem Gebiet des plastischen Verhaltens und der plastischen Zug-Spannungs-Beziehungen. Behandelt werden in erster Linie Baustoffe, vor allem Stahl, aber auch Beton und Boden. Eine ausgewogene Mischung aus qualitativer Diskussion und mathematischer Theorie! (05/00)

Inelastic Deformation of Metals Under Dynamic Loading

Inelastic Deformation of Metals Under Dynamic Loading
Author: J. Duffy
Publisher:
Total Pages: 8
Release: 1976
Genre:
ISBN:

Torsional split-Hopkinson bar experiments, involving jumps in strain rate from 0.0001/s to 1000/s have been carried out on four metals (1100-0 aluminum, OFHC copper, zinc, AZ30B magnesium) at temperatures ranging from -200C to 250C. In addition, the effect of annealing temperature on the strain rate sensitivity of the flow stress has been examined for OFHC copper and a tellurium-doped copper alloy, Amtel. Effects of strain rate and strain rate history observed in these experiments have been examined within the framework of a theory of thermally activated motion, multiplication and annihilation of dislocations. Wavefront and Late-time asymptotic solutions have been obtained for wave propagation in linear elastic and visco-elastic bilaminates. Plastic waves of combined stress have been analyzed using a self-consistent slip model to characterize the stress-strain behavior of polycrystalline aluminum. Solutions have been obtained for three hardening models in which slip on one slip system increases the yield stress on (1) that system only, (2) all systems equally, (3) to a greater degree on nonco-planar systems. Comparison of theory with experiment shows better agreement than when smooth yield surface constitutive models are used. (Author).

Inelastic Deformation of Composite Materials

Inelastic Deformation of Composite Materials
Author: George J. Dvorak
Publisher: Springer Science & Business Media
Total Pages: 763
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 1461391091

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.

Inelastic Deformation of Metal Matrix Composites

Inelastic Deformation of Metal Matrix Composites
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
Total Pages: 54
Release: 2018-07-08
Genre:
ISBN: 9781722490102

The inelastic deformation mechanisms for the SiC (SCS-6)/Ti-15-3 system were studied at 538 C (1000 F) using a combination of mechanical measurements and detailed microstructural examinations. The objectives were to evaluate the contributions of plasticity and damage to the overall MMC response, and to compare the room temperature and elevated temperature deformation behaviors. Four different laminates were studied: (0)8, (90)8, (] or -45)2s, and (0/90)2s, with the primary emphasis on the unidirectional (0)8, and (90)8 systems. The elevated temperature responses were similar to those at room temperature, involving a two-stage elastic-plastic type of response for the (0)8 system, and a characteristic three-stage deformation response for the (90)8 and (+ or -45)2s systems. The primary effects of elevated temperatures included: (1) reduction in the 'yield' and failure strengths; (2) plasticity through diffused slip rather than concentrated planar slip (which occurred at room temperature); and (3) time-dependent deformation. The inelastic deformation mechanism for the (0)8 MMC was dominated by plasticity at both temperatures. For the (90)8 and (+ or -45)2s MMCs, a combination of damage and plasticity contributed to the deformation at both temperatures. Majumdar, B. S. and Newaz, G. M. Unspecified Center..