Effects of Filler Content on Mechanical Properties of Macroporous Composites
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2010
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The mechanical properties of hydroxyapatite related macroporous biocomposites (MPBs) are influenced by a number of factors, such as the pore size, the filler content and the properties of the matrix and the inclusion. Failure often occurs when the strength of the implant cannot bear the applied mechanical load. In this study, the effects of filler content on the mechanical properties of MPBs have been investigated. A finite element (FE) unit cell model of a macroporous hydroxyapatite-polyetheretherketone (HA-PEEK) biocomposite structure with uniform and interconnected pores has been constructed. In the FE model, the HA particles were assumed to have random distribution, and particle volume fraction would be varied in the PEEK matrix. The material behaviours of both HA and PEEK have been implemented in the ABAQUS finite element code. HA was modelled to exhibit elastic behaviour and undergo plastic softening to a residual strength when a critical stress was reached, while the PEEK matrix... would follow elastic-plastic behaviour. The macroscopic compressive stress-strain relations of the macroporous biocomposite structures have been predicted. Increasing particle volume fraction could lead to an increase in the compressive elastic modulus of the structures but a reduction in the compressive strength. The von Mises stress distribution and the effect of stress concentration in the structures with different filler content are also discussed. The proposed model could provide macro-structural and microscopic information of the macroporous biocomposite structure to the designers in order to facilitate the fabrication of this kind of structure with optimum mechanical properties.
Ključne reči:
Macroporous biocomposites / filler content / unit cell model / finite element methodIzvor:
Composite Interfaces, 2010, 17, 5-7, 571-579Izdavač:
- Vsp Bv, Leiden
Finansiranje / projekti:
- Research Grants Council of the Hong Kong Special Administrative Region, ChinaHong Kong Research Grants Council [PolyU 5273/07E]
DOI: 10.1163/092764410X513440
ISSN: 0927-6440
WoS: 000282662500014
Scopus: 2-s2.0-77955719583
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Tsui, C. P. AU - Tang, C. Y. AU - Guo, Y. Q. AU - Uskoković, Petar AU - Fan, Jian-Ping AU - Gao, B. PY - 2010 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1615 AB - The mechanical properties of hydroxyapatite related macroporous biocomposites (MPBs) are influenced by a number of factors, such as the pore size, the filler content and the properties of the matrix and the inclusion. Failure often occurs when the strength of the implant cannot bear the applied mechanical load. In this study, the effects of filler content on the mechanical properties of MPBs have been investigated. A finite element (FE) unit cell model of a macroporous hydroxyapatite-polyetheretherketone (HA-PEEK) biocomposite structure with uniform and interconnected pores has been constructed. In the FE model, the HA particles were assumed to have random distribution, and particle volume fraction would be varied in the PEEK matrix. The material behaviours of both HA and PEEK have been implemented in the ABAQUS finite element code. HA was modelled to exhibit elastic behaviour and undergo plastic softening to a residual strength when a critical stress was reached, while the PEEK matrix would follow elastic-plastic behaviour. The macroscopic compressive stress-strain relations of the macroporous biocomposite structures have been predicted. Increasing particle volume fraction could lead to an increase in the compressive elastic modulus of the structures but a reduction in the compressive strength. The von Mises stress distribution and the effect of stress concentration in the structures with different filler content are also discussed. The proposed model could provide macro-structural and microscopic information of the macroporous biocomposite structure to the designers in order to facilitate the fabrication of this kind of structure with optimum mechanical properties. PB - Vsp Bv, Leiden T2 - Composite Interfaces T1 - Effects of Filler Content on Mechanical Properties of Macroporous Composites EP - 579 IS - 5-7 SP - 571 VL - 17 DO - 10.1163/092764410X513440 ER -
@article{ author = "Tsui, C. P. and Tang, C. Y. and Guo, Y. Q. and Uskoković, Petar and Fan, Jian-Ping and Gao, B.", year = "2010", abstract = "The mechanical properties of hydroxyapatite related macroporous biocomposites (MPBs) are influenced by a number of factors, such as the pore size, the filler content and the properties of the matrix and the inclusion. Failure often occurs when the strength of the implant cannot bear the applied mechanical load. In this study, the effects of filler content on the mechanical properties of MPBs have been investigated. A finite element (FE) unit cell model of a macroporous hydroxyapatite-polyetheretherketone (HA-PEEK) biocomposite structure with uniform and interconnected pores has been constructed. In the FE model, the HA particles were assumed to have random distribution, and particle volume fraction would be varied in the PEEK matrix. The material behaviours of both HA and PEEK have been implemented in the ABAQUS finite element code. HA was modelled to exhibit elastic behaviour and undergo plastic softening to a residual strength when a critical stress was reached, while the PEEK matrix would follow elastic-plastic behaviour. The macroscopic compressive stress-strain relations of the macroporous biocomposite structures have been predicted. Increasing particle volume fraction could lead to an increase in the compressive elastic modulus of the structures but a reduction in the compressive strength. The von Mises stress distribution and the effect of stress concentration in the structures with different filler content are also discussed. The proposed model could provide macro-structural and microscopic information of the macroporous biocomposite structure to the designers in order to facilitate the fabrication of this kind of structure with optimum mechanical properties.", publisher = "Vsp Bv, Leiden", journal = "Composite Interfaces", title = "Effects of Filler Content on Mechanical Properties of Macroporous Composites", pages = "579-571", number = "5-7", volume = "17", doi = "10.1163/092764410X513440" }
Tsui, C. P., Tang, C. Y., Guo, Y. Q., Uskoković, P., Fan, J.,& Gao, B.. (2010). Effects of Filler Content on Mechanical Properties of Macroporous Composites. in Composite Interfaces Vsp Bv, Leiden., 17(5-7), 571-579. https://doi.org/10.1163/092764410X513440
Tsui CP, Tang CY, Guo YQ, Uskoković P, Fan J, Gao B. Effects of Filler Content on Mechanical Properties of Macroporous Composites. in Composite Interfaces. 2010;17(5-7):571-579. doi:10.1163/092764410X513440 .
Tsui, C. P., Tang, C. Y., Guo, Y. Q., Uskoković, Petar, Fan, Jian-Ping, Gao, B., "Effects of Filler Content on Mechanical Properties of Macroporous Composites" in Composite Interfaces, 17, no. 5-7 (2010):571-579, https://doi.org/10.1163/092764410X513440 . .