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Acta Biomater ; 5(1): 381-90, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-18753022

RESUMO

The susceptibility to deformation localization of simple cubic arrangements of struts, which are a simple approximation of the micro-architecture in cancellous bone, is analyzed. The coherence between structural disorder and the tendency towards deformation localization is investigated and its relevance from a biological point of view is discussed. A systematic study on the spatial deformation distribution of regular and disordered open cell structures is carried out. To this end, finite element models are employed which account for elastic-plastic bulk material and large strain theory, and a methodology for the estimation of the degree of deformation localization is introduced.


Assuntos
Materiais Biocompatíveis/química , Osso e Ossos/metabolismo , Estruturas Celulares/metabolismo , Animais , Fenômenos Biomecânicos , Remodelação Óssea , Força Compressiva , Elasticidade , Análise de Elementos Finitos , Humanos , Modelos Biológicos , Modelos Teóricos , Distribuição de Poisson , Polímeros/química , Estresse Mecânico
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