A comparative study of two types of gradient theory of plasticity

Sergei Alexandrov, Yeau-Ren Jeng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The objective of the present paper is to show that predictions of the conventional strain gradient theories do not coincide with some general physical expectations when large strains and geometry changes should be considered. As an alternative, it is proposed to use strain rate gradient theories of plasticity. One possible theory of this type is formulated as a formal modification of a strain gradient theory of plasticity. The problem of hollow sphere expansion at large strains is solved for both the strain gradient and strain rate gradient theories of plasticity. Comparison of these solutions reveals advantages of the strain rate gradient theory of plasticity for a class of problems.

Original languageEnglish
Title of host publicationInnovation in Materials Science and Emerging Technology
Pages485-488
Number of pages4
DOIs
Publication statusPublished - 2012 Jan 2
Event1st International Conference on Engineering and Technology Innovation, ICETI 2011 - Kenting, Pingtung, Taiwan
Duration: 2011 Nov 112011 Nov 15

Publication series

NameApplied Mechanics and Materials
Volume145
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Other

Other1st International Conference on Engineering and Technology Innovation, ICETI 2011
CountryTaiwan
CityKenting, Pingtung
Period11-11-1111-11-15

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Alexandrov, S., & Jeng, Y-R. (2012). A comparative study of two types of gradient theory of plasticity. In Innovation in Materials Science and Emerging Technology (pp. 485-488). (Applied Mechanics and Materials; Vol. 145). https://doi.org/10.4028/www.scientific.net/AMM.145.485