The purpose of this two-part article, is first to give an update of recent developments of gradient plasticity as this was advanced by Aifantis and co-workers in the early eighties to address dislocation patterning and shear band problems, and then to elaborate on two specific issues of current interest: size effects and plastic heterogeneity. In Part I, a brief review of gradient dislocation dynamics as providing a direct motivation for the simplest form of gradient plasticity is given. Then, a more general phenomenological formulation of gradient plasticity is given and used to interpret size effects. In Part II, wavelet analysis is used as a potential tool to describe plastic heterogeneity at very fine scales for which experimental results are not available, as well as for providing another means to interpret size effects through the derivation of scale-dependent constitutive equations.
Recent Developments in Gradient Plasticity—Part I: Formulation and Size Effects
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division January 19, 2002; revised manuscript received February 19, 2002. Guest Editors: Tariq A. Khraishi and Hussein M. Zbib.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Tsagrakis, I., and Aifantis, E. C. (June 10, 2002). "Recent Developments in Gradient Plasticity—Part I: Formulation and Size Effects ." ASME. J. Eng. Mater. Technol. July 2002; 124(3): 352–357. https://doi.org/10.1115/1.1479695
Download citation file:
- Ris (Zotero)
- Reference Manager