Results 251 to 260 of about 657,951 (302)

Mechanism-Based Strain Gradient Crystal Plasticity

MRS Proceedings, 2004
AbstractTo model size dependent plastic deformation at micron and submicron length scales the theory of mechanism-based strain gradient plasticity (MSG) was developed. The MSG approach incorporates the concept of geometrically necessary dislocations into continuum plastic constitutive laws via Taylor hardening relation. This concept is extended here to
Chung-Souk Han, Huajian Gao, Yonggang Huang, William D. Nix   +3 more
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Stability of strain-gradient plastic materials

Journal of the Mechanics and Physics of Solids, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dal Corso, Francesco, J. R. Willis
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Strain avalanches in plasticity

Philosophical Magazine, 2013
Plastic deformation at the mechanism level in all solids occurs in the form of discrete thermally activated individual stress relaxation events. While there are clear differences in mechanisms between dislocation mediated events in crystalline solids and by individual shear transformations in amorphous metals and semiconductors, such relaxation events ...
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Local Plastic Strain Measurement by EBSD

Applied Mechanics and Materials, 2007
Work has been carried out recently, which demonstrates misorientation measurements recorded by using electron backscatter diffraction (EBSD) enables one to undertake local post mortem plastic strain quantification once the degree of misorientation is calibrated against plastic strain.
Kamaya, M., Quinta Da Fonseca, J., Li, L. M., Preuss, M.   +3 more
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Two-Dimensional Strain Cycling in Plasticity

Journal of Applied Mechanics, 1986
Detailed calculations are presented for strain cycling in a homogeneous deformation that can be sustained by a biaxial state of stress in thin-walled specimens of OFHC copper. These calculations are made with a set of relatively simple constitutive equations within the framework of the strain-space formulation of plasticity.
Naghdi, P. M., Nikkel, D. J. jun.
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A strain space gradient plasticity theory for finite strain

Computer Methods in Applied Mechanics and Engineering, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chambon R., Caillerie D., TAMAGNINI, Claudio   +2 more
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Plane Strain Plastic Deformation

1977
In previous chapters, plastic deformation of an element of material on a microscopic scale was considered as though the element were independent of the body of material. For many metal forming processes such as forging, drawing and rolling the geometrical configuration of the tooling, frictional conditions at the workpiece—tooling interfaces and the ...
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Large-Strain Surface Modeling Using Plasticity

IEEE Transactions on Visualization and Computer Graphics
Modeling arbitrarily large deformations of surfaces smoothly embedded in three-dimensional space is challenging. We give a new method to represent surfaces undergoing large spatially varying rotations and strains, based on differential geometry, and surface first and second fundamental forms.
Jiahao Wen, Bohan Wang, Jernej Barbič
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Finite-strain elasto-plasticity

2000
In this chapter, the infinitesimal theory of elasto-plasticity of Chap. 12 is generalized to finite strains. Two formulations are presented. The first one is based on a multiplicative decomposition of the deformation gradient into elastic and plastic parts and on hyperelastic stress-strain relations.
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Plastic strain localization in Bouligand structures

Journal of the Mechanical Behavior of Biomedical Materials
The Bouligand structure represents helicoidal stacking of aligned fibers; such a structure is widely observed in biological composites. Despite the progress in characterization of toughening caused by Bouligand arrangement of fibers, the inelastic deformation mechanisms of this structure remain elusive.
Bingbing, An, Tiange, Zhou, Yalin, Li
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