Geometric control of failure behavior in perforated sheets
Materials Science
2015-06-22 v2 Soft Condensed Matter
Abstract
Adding perforations to a continuum sheet allows new modes of deformation, and thus modifies its elastic behavior. The failure behavior of such a perforated sheet is explored, using a model experimental system: a material containing a one-dimensional array of rectangular holes. In this model system, a transition in failure mode occurs as the spacing and aspect ratio of the holes are varied: rapid failure via a running crack is completely replaced by quasi-static failure which proceeds via the breaking of struts at random positions in the array of holes. I demonstrate that this transition can be connected to the loss of stress enhancement which occurs as the material geometry is modified.
Cite
@article{arxiv.1409.0025,
title = {Geometric control of failure behavior in perforated sheets},
author = {Michelle M. Driscoll},
journal= {arXiv preprint arXiv:1409.0025},
year = {2015}
}
Comments
8 pages, 7 figures