On the Dynamic Behavior of a Frank-Read Source-Reference-Cited by-同舟云学术

On the Dynamic Behavior of a Frank-Read Source

Published:1961-09-01 Issue:3 Volume:28 Page:447-453
ISSN:0021-8936
Container-title:Journal of Applied Mechanics
language:en
Short-container-title:

Author:

Campbell J. D.¹,Simmons J. A.²,Dorn J. E.³

Affiliation:

1. Department of Engineering Science, Oxford University, Oxford, England

2. Institute of Engineering Research, University of California, Berkeley, Calif.

3. University of California, Berkeley, Calif.

Abstract

The equation of motion for a curved dislocation moving at high velocities in a slip plane is solved for a dislocation half-mill. It is found that the angular velocity of a dislocation half-mill about the pinning point is constant for constant stress. The solution is applied to a Frank-Read source to give the shape of the nucleating source and the time of activation. For Al, the time of nucleation of a Frank-Read source is about 9 × 10−10 sec when the stress on the source is 5 × 10−4G.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

Link

http://asmedigitalcollection.asme.org/appliedmechanics/article-pdf/28/3/447/5444151/447_1.pdf

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1. Shear Localization in Dynamic Deformation: Microstructural Evolution;Metallurgical and Materials Transactions A;2008-02-13

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