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  4. Anisotropic constitutive model incorporating multiple damage mechanisms for multiscale simulation of dental enamel
 
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Anisotropic constitutive model incorporating multiple damage mechanisms for multiscale simulation of dental enamel

Citation Link: https://doi.org/10.15480/882.1820
Publikationstyp
Journal Article
Date Issued
2016-06-03
Sprache
English
Author(s)
Ma, Songyun  
Scheider, Ingo  
Bargmann, Swantje  
Institut
Kontinuums- und Werkstoffmechanik M-15  
TORE-DOI
10.15480/882.1820
TORE-URI
http://tubdok.tub.tuhh.de/handle/11420/1823
Journal
Journal of the mechanical behavior of biomedical materials  
Volume
62
Start Page
515
End Page
533
Citation
Journal of the mechanical behavior of biomedical materials (62): 515-533-533 (2016)
Publisher DOI
10.1016/j.jmbbm.2016.05.033
Scopus ID
2-s2.0-84973472674
Publisher
Elsevier
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.
Subjects
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
DDC Class
600: Technik
610: Medizin
Lizenz
https://creativecommons.org/licenses/by-nc-nd/4.0/
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