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A Hierarchical Approach to Fracture Mechanics (Paperback) Loot Price: R454
Discovery Miles 4 540
A Hierarchical Approach to Fracture Mechanics (Paperback): Nasa Technical Reports Server (Ntrs)

A Hierarchical Approach to Fracture Mechanics (Paperback)

Nasa Technical Reports Server (Ntrs); Erik Seather, Shloma Taasan

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Loot Price R454 Discovery Miles 4 540

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Recent research conducted under NASA LaRC's Creativity and Innovation Program has led to the development of an initial approach for a hierarchical fracture mechanics. This methodology unites failure mechanisms occurring at different length scales and provides a framework for a physics-based theory of fracture. At the nanoscale, parametric molecular dynamic simulations are used to compute the energy associated with atomic level failure mechanisms. This information is used in a mesoscale percolation model of defect coalescence to obtain statistics of fracture paths and energies through Monte Carlo simulations. The mathematical structure of predicted crack paths is described using concepts of fractal geometry. The non-integer fractal dimension relates geometric and energy measures between meso- and macroscales. For illustration, a fractal-based continuum strain energy release rate is derived for inter-and transgranular fracture in polycrystalline metals.

General

Imprint: Bibliogov
Country of origin: United States
Release date: July 2013
First published: July 2013
Creators: Nasa Technical Reports Server (Ntrs)
Authors: Erik Seather • Shloma Taasan
Dimensions: 246 x 189 x 2mm (L x W x T)
Format: Paperback - Trade
Pages: 32
ISBN-13: 978-1-287-26726-3
Categories: Books > Social sciences > Politics & government > General
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LSN: 1-287-26726-2
Barcode: 9781287267263

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