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Fundamental Principles

  • J. Chakrabarty
Part of the Mechanical Engineering Series book series (MES)

Abstract

In a single crystal of many metals, the main mechanism of plastic deformation is simple shear parallel to preferred planes and directions, which at ordinary temperatures coincide with those of the highest atomic density. Slip is initiated along a particular plane and in a given direction when the associated component of the shear stress attains a critical value under increasing external load. The amount of plastic deformation in a single crystal is specified by the glide strain, which is the relative displacement of two parallel slip planes at a unit distance apart. When there are several possible slip directions in a crystal lattice, the displacement of any point in the crystal due to simultaneous shears in the appropriate directions can be found from simple geometry. The mechanism of slip-induced plasticity in single crystals, governed by the glide motion of dislocations along corresponding slip planes, has been the subject of numerous investigations in the past.

Keywords

Plastic Strain Yield Surface Deviatoric Stress Strain Increment Yield Locus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer Science+Business Media New York 2000

Authors and Affiliations

  • J. Chakrabarty
    • 1
  1. 1.Department of Mechanical EngineeringNational Taiwan UniversityTaipeiTaiwan, R.O.C.

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