Verlagslink DOI: 10.1016/j.jmbbm.2016.05.033
Titel: Anisotropic constitutive model incorporating multiple damage mechanisms for multiscale simulation of dental enamel
Sprache: English
Autor/Autorin: Ma, Songyun 
Scheider, Ingo 
Bargmann, Swantje 
Schlagwörter: 3D micromechanical simulation;Anisotropic hyperelastic damage model;Bio-composite;Dental enamel;Multiple damage mechanisms;Numerical homogenization;Compressive Strength;Computer Simulation;Dental Stress Analysis;Finite Element Analysis;Stress, Mechanical;Anisotropy;Dental Enamel;Models, Biological
Erscheinungsdatum: 3-Jun-2016
Verlag: Elsevier
Quellenangabe: Journal of the mechanical behavior of biomedical materials (62): 515-533-533 (2016)
Zeitschrift oder Schriftenreihe: Journal of the mechanical behavior of biomedical materials 
Zusammenfassung (englisch): An anisotropic constitutive model is proposed in the framework of finite deformation to capture several damage mechanisms occurring in the microstructure of dental enamel, a hierarchical bio-composite. It provides the basis for a homogenization approach for an efficient multiscale (in this case: multiple hierarchy levels) investigation of the deformation and damage behavior. The influence of tension-compression asymmetry and fiber-matrix interaction on the nonlinear deformation behavior of dental enamel is studied by 3D micromechanical simulations under different loading conditions and fiber lengths. The complex deformation behavior and the characteristics and interaction of three damage mechanisms in the damage process of enamel are well captured. The proposed constitutive model incorporating anisotropic damage is applied to the first hierarchical level of dental enamel and validated by experimental results. The effect of the fiber orientation on the damage behavior and compressive strength is studied by comparing micro-pillar experiments of dental enamel at the first hierarchical level in multiple directions of fiber orientation. A very good agreement between computational and experimental results is found for the damage evolution process of dental enamel.
URI: http://tubdok.tub.tuhh.de/handle/11420/1823
DOI: 10.15480/882.1820
ISSN: 1878-0180
Institut: Kontinuums- und Werkstoffmechanik M-15 
Dokumenttyp: (wissenschaftlicher) Artikel
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