Fracturing of Marginally Stable Structures: Fiber Networks and Topological Metamaterials

Mao, Xiaoming

Title:

Fracturing of Marginally Stable Structures: Fiber Networks and Topological Metamaterials

dc.contributor.author	Mao, Xiaoming
dc.contributor.corporatename	Georgia Institute of Technology. Center for the Science and Technology of Advanced Materials and Interfaces	en_US
dc.contributor.corporatename	University of Michigan	en_US
dc.date.accessioned	2018-05-23T21:18:06Z
dc.date.available	2018-05-23T21:18:06Z
dc.date.issued	2018-04-19
dc.description	Presented at the Symposium on Soft Matter Forefronts, April 19, 2018, from 8:30 a.m.-9:10 a.m. at the Marcus Nanotechnology Building, Rooms 1116-1118, Georgia Tech.	en_US
dc.description	Chairs: Michael Tennenbaum & Alberto Fernandez-Nieves (Georgia Tech).	en_US
dc.description	Xiaoming Mao is with the University of Michigan.	en_US
dc.description	Runtime: 31:22 minutes
dc.description.abstract	When conventional brittle materials break, long cracks form due to stress focusing at crack tips: a phenomenon explained by Griffith in the 1920s. In this talk, we will discuss two types of systems where the fracturing process is “unconventional”. The first type are fiber networks. Using simulations we found that stress concentration never occurs in these networks. Instead, the network enters a steady state where force chains break and reform, leading to a divergent length scale. The second type are Maxwell lattices with domain walls hosting topologically protected states of self stress. Our simulations showed that stress and bond breaking events are concentrated on these domain walls, even in presence of cracks and deep into the nonlinear process of fracturing. We discuss how these ideas can be used in designing metamaterials that are protected against crack formation.	en_US
dc.description.sponsorship	Georgia Institute of Technology. College of Sciences	en_US
dc.description.sponsorship	Georgia Institute of Technology. Institute for Materials	en_US
dc.description.sponsorship	Georgia Institute of Technology. Parker H. Petit Institute for Bioengineering and Bioscience	en_US
dc.description.sponsorship	Georgia Institute of Technology. School of Materials Science and Engineering	en_US
dc.description.sponsorship	Georgia Institute of Technology. School of Physics	en_US
dc.description.sponsorship	American Physical Society	en_US
dc.description.sponsorship	Exxon Mobil Corporation	en_US
dc.description.sponsorship	National Science Foundation (U.S.)	en_US
dc.format.extent	31:22 minutes
dc.identifier.uri	http://hdl.handle.net/1853/59717
dc.language.iso	en_US	en_US
dc.publisher	Georgia Institute of Technology	en_US
dc.subject	Cracks	en_US
dc.subject	Fiber networks	en_US
dc.subject	Fracturing	en_US
dc.subject	Maxwell lattices	en_US
dc.title	Fracturing of Marginally Stable Structures: Fiber Networks and Topological Metamaterials	en_US
dc.type	Moving Image
dc.type.genre	Lecture
dspace.entity.type	Publication
local.contributor.corporatename	Soft Matter Incubator
local.contributor.corporatename	Center for the Science and Technology of Advanced Materials and Interfaces
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relation.isOrgUnitOfPublication	a21b130a-9b72-4c0c-b82d-22f981aa1d12