Crystal Plasticity

1983 ◽  
Vol 50 (4b) ◽  
pp. 921-934 ◽  
Author(s):  
R. J. Asaro
Keyword(s):  
Crystallographic Texture ◽  
Inelastic Deformation ◽  
Constitutive Behavior ◽  
Large Strains ◽  
Significant Progress ◽  
Crystalline Materials ◽  
Hardening Behavior ◽  
The Past ◽  
Rate Dependent ◽  
Strain Hardening Behavior

Significant progress has been made during the past decade in incorporating micromechanics in continuum descriptions of inelastic deformation. This has led to the development of a rather comprehensive constitutive theory for rate-dependent and idealized rate-independent crystalline materials that deform plastically by crystalline slip. This theory is reviewed in some detail and examples are presented which illustrate how complex slip phenomena involving localized plastic flow and nonuniform crystallographic texture can be analyzed. The paper concludes by suggesting that it is now possible to develop accurate models for rate-dependent polycrystals undergoing arbitrarily large strains. Such models would have as principal aims the prediction of texture development and the rigorous assessment of such anisotropy on constitutive behavior. An example of how this would be of immediate value in analyzing strain-hardening behavior of metal polycrystals at large strains is provided.

Large Strain, High Strain Rate Testing of Copper

1980 ◽  
Vol 102 (4) ◽  
pp. 376-381 ◽  
Author(s):  
U. S. Lindholm ◽  
A. Nagy ◽  
G. R. Johnson ◽  
J. M. Hoegfeldt
Keyword(s):  
Strain Rate ◽  
High Speed ◽  
Large Strain ◽  
Shear Banding ◽  
Testing Machine ◽  
Shear Instability ◽  
Large Strains ◽  
Rate Dependent ◽  
Torsional Testing ◽  
Strain Hardening Behavior

This paper describes the development of a high-speed torsional testing machine and results obtained on the strain-rate dependent strength of copper at large shear strains. Test techniques and data obtained are intended to be useful in applications such as ballistics and machining. For copper, the results indicate positive strain hardening behavior to very large strains under low rate, isothermal conditions and the transition to adiabatic thermal softening, shear instability and localization (shear banding) at high rates.

Non-linear, rate-dependent strain-hardening behavior of polymer glasses

Polymer ◽  
2005 ◽  
Vol 46 (25) ◽  
pp. 11786-11797 ◽  
Author(s):  
Michael Wendlandt ◽  
Theo A. Tervoort ◽  
Ulrich W. Suter
Keyword(s):  
Strain Hardening ◽  
Polymer Glasses ◽  
Linear Rate ◽  
Hardening Behavior ◽  
Rate Dependent ◽  
Non Linear ◽  
Dependent Strain ◽  
Strain Hardening Behavior

scholarly journals Microstructure, crystallographic texture and strain hardening behavior in hot tensile tests of UNS S32304 Lean Duplex stainless steel

2021 ◽  
Vol 12 ◽  
pp. 1065-1079
Author(s):  
Ariane Neves de Moura ◽  
Carlos Alberto Rosa Neto ◽  
Nicolau Apoena Castro ◽  
Estéfano Aparecido Vieira ◽  
Marcos Tadeu D'Azeredo Orlando
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Strain Hardening ◽  
Crystallographic Texture ◽  
Tensile Tests ◽  
Lean Duplex Stainless Steel ◽  
Hardening Behavior ◽  
Strain Hardening Behavior

Analytical Solutions for Circular Bars Subjected to Large Strain Plastic Torsion

1990 ◽  
Vol 57 (2) ◽  
pp. 298-306 ◽  
Author(s):  
K. W. Neale ◽  
S. C. Shrivastava
Keyword(s):  
Closed Form ◽  
Analytical Solutions ◽  
Large Strain ◽  
Kinematic Hardening ◽  
Flow Theory ◽  
Constitutive Laws ◽  
Isotropic Hardening ◽  
Large Strains ◽  
Inelastic Behavior ◽  
Rate Dependent

The inelastic behavior of solid circular bars twisted to arbitrarily large strains is considered. Various phenomenological constitutive laws currently employed to model finite strain inelastic behavior are shown to lead to closed-form analytical solutions for torsion. These include rate-independent elastic-plastic isotropic hardening J2 flow theory of plasticity, various kinematic hardening models of flow theory, and both hypoelastic and hyperelastic formulations of J2 deformation theory. Certain rate-dependent inelastic laws, including creep and strain-rate sensitivity models, also permit the development of closed-form solutions. The derivation of these solutions is presented as well as numerous applications to a wide variety of time-independent and rate-dependent plastic constitutive laws.

Comprehensive study of strain hardening behavior of CrCoNi medium-entropy alloy

2021 ◽  
pp. 160623
Author(s):  
Bo Guan ◽  
Yitao Wang ◽  
Jianbo Li ◽  
Yu Zhang ◽  
Hao Wang ◽  
...  
Keyword(s):  
Strain Hardening ◽  
Hardening Behavior ◽  
Strain Hardening Behavior ◽  
Comprehensive Study

DESIGN DISCOURSE AND THE COGNITIVE SCIENCE OF DESIGN

2014 ◽  
Vol 79 (1) ◽  
pp. 37-53
Author(s):  
Jeroen de Ridder
Keyword(s):  
Cognitive Science ◽  
Science And Religion ◽  
The Other ◽  
Significant Progress ◽  
The Past ◽  
The One ◽  
Bare Bones ◽  
Single Focus

Much of Alvin Plantinga’s Where the Conflict Really Lies(2011) will contain few surprises for those who have been following his work over the past decades. This —I hasten to add — is nothing against the book. The fact alone that his ideas on various topics, which have appeared scattered throughout the literature, are now actualized, applied to the debate about the (alleged) conflict between science and religion, and organized into an overarching argument with a single focus makes this book worthwhile. Moreover, I see this book making significant progress on two opposite ends of the spectrum of views about science and religion. On the one end, we find the so-called new atheists and other conflict-mongers. Compared to the overheated rhetoric that oozes from their writings, this book is a breath of fresh air. Plantinga cuts right to the chase and soberly exposes the bare bones of the new atheists’ arguments. It immediately becomes clear how embarrassingly bare these bones really are. On the other end of the spectrum are theologians and scientists who envisage harmony and concord between science and religion.

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