期刊
ACTA BIOMATERIALIA
卷 4, 期 6, 页码 1715-1724出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.actbio.2008.05.020
关键词
Finite element analysis; Robocasting; Scaffolds; Strength; Fracture modes
资金
- Ministerio de Educacion y Ciencia (Spanish Government)
- Fondo Social Europeo [MAT2006-08720]
The use of finite element modeling to calculate the stress fields in complex scaffold structures and thus predict their mechanical behavior during service (e.g., as load-bearing bone implants) is evaluated. The method is applied to identifying the fracture modes and estimating the strength of robocast hydroxyapatite and beta-tricalcium phosphate scaffolds, consisting of a three-dimensional lattice of interpenetrating rods. The calculations are performed for three testing configurations: compression, tension and shear. Different testing orientations relative to the calcium phosphate rods are considered for each configuration. The predictions for the compressive configurations are compared to experimental data from uniaxial compression tests. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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