Application of a 3d-continuum theory of dislocations to a problem of constrained plastic flow: Microbending of a thin film

Stefan Sandfeld; Thomas Hochrainer; Michael Zaiser

Application of a 3d-continuum theory of dislocations to a problem of constrained plastic flow: Microbending of a thin film

Stefan Sandfeld^*, Thomas Hochrainer, Michael Zaiser

^*Corresponding author for this work

Institute of Strength of Materials (3040)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

The advancing miniaturisation of e.g. microelectronic devices leads to an increasing interest in physically motivated continuum theories of plasticity in small volumes. Such theories need to be based on the averaged dynamics of dislocations. Preserving the line-like character of these defects, however, posed serious problems for the development of dislocation-based continuum theories, while continuum theories based on scalar dislocation densities necessarily stay on a phenomenological level. Within this work we apply a dislocation-based continuum theory, which is based on a physically meaningful averaging of dislocation lines, to the benchmark problem of bending of a free-standing thin film.

Original language	English
Title of host publication	Mechanical Behavior at Small Scales - Experiments and Modeling
Editors	Jun Lou
Publisher	Materials Research Society
Pages	143-148
Number of pages	6
Volume	1224
ISBN (Print)	978-1-60511-197-1
Publication status	Published - 2010
Event	2009 MRS Fall Meeting - Boston, MA, United States Duration: 29 Nov 2009 → 3 Dec 2009

Conference

Conference	2009 MRS Fall Meeting
Country/Territory	United States
City	Boston, MA
Period	29/11/09 → 3/12/09

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanical Engineering
Mechanics of Materials

Cite this

Application of a 3d-continuum theory of dislocations to a problem of constrained plastic flow: Microbending of a thin film. / Sandfeld, Stefan; Hochrainer, Thomas; Zaiser, Michael.
Mechanical Behavior at Small Scales - Experiments and Modeling. ed. / Jun Lou. Vol. 1224 Materials Research Society, 2010. p. 143-148.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

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AB - The advancing miniaturisation of e.g. microelectronic devices leads to an increasing interest in physically motivated continuum theories of plasticity in small volumes. Such theories need to be based on the averaged dynamics of dislocations. Preserving the line-like character of these defects, however, posed serious problems for the development of dislocation-based continuum theories, while continuum theories based on scalar dislocation densities necessarily stay on a phenomenological level. Within this work we apply a dislocation-based continuum theory, which is based on a physically meaningful averaging of dislocation lines, to the benchmark problem of bending of a free-standing thin film.

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Application of a 3d-continuum theory of dislocations to a problem of constrained plastic flow: Microbending of a thin film

Abstract

Conference

ASJC Scopus subject areas

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