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A multiscale model for predicting damage evolution in heterogeneous viscoelastic media

A multiple scale theory is developed for the prediction of damage evolution in heterogeneous viscoelastic media. Asymptotic expansions of the field variables are used to derive a global scale viscoelastic constitutive equation that includes the effects of local scale damage. Damage, in the form discrete cracks, is allowed to grow according to a micromechanically-based viscoelastic traction-displacement law. Finite element formulations have been developed for both the global and local scale problems. These formulations have been implemented into a two-scale computational model Numerical results are given for several example problems in order to demonstrate the effectiveness of the technique.

Identiferoai:union.ndltd.org:TEXASAandM/oai:repository.tamu.edu:1969.1/1251
Date15 November 2004
CreatorsSearcy, Chad Randall
ContributorsAllen, David, Lagoudas, Dimitris, Walton, Jay, Slattery, John, Kinra, Vikram
PublisherTexas A&M University
Source SetsTexas A and M University
Languageen_US
Detected LanguageEnglish
TypeElectronic Dissertation, text
Format2144093 bytes, 144002 bytes, electronic, application/pdf, text/plain, born digital

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