Research of Multi-Scale Mechanics Behavior in Hierarchical Porous Bio-Ceramics

Abstract:

This paper studied on micro/macro-structure of porous bio-ceramics with hierarchical structures in different scales. Established the connection between the micro and macro pores, results show that with the increment of porosity in micro-structure, the solid material effective property in the macro-structure increased and it is influenced by the porous arrangement. Then in the preparation process, defects such as cracks are easy to be introduced, at the macro-structure level, based on the principle of extended finite element method, studied of porous bio-ceramics containing cracks, the prediction of crack paths and critical loads were obtained with different porosities.

• Periodical: Applied Mechanics and Materials (Volumes 37-38)
• Pages: 964-967
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.37-38.964
• Online since: November 2010
• Authors: Nan Zhan, Jin Long Chen, Qian Liu
• Keywords: Effective Properties, Fracture Toughness, Hierarchical Porous Bio-Ceramics, Porosity, Representative Volume Element (RVE), Two-Scale Asymptotic Expansion

References

[1] B. Hassani and E. Hinton: Computers & Structures, Vol. 69 (1998) No. 6, pp.707-717.

[2] B. Hassani and E. Hinton: Computers & Structures, Vol. 69 (1998) No. 6, pp.719-738.

[3] N. Moes, J. Dolbow and T. Belytschko: International Journal for Numerical Methods in Engineering, Vol. 46 (1999) No. 1, pp.131-150.

[4] S.S. Liao, F.Z. Cui, W. Zhang and Q.L. Feng: Journal of Biomedical Materials Research Part B-Applied Biomaterials, Vol. 69B (2004) No. 2, pp.158-165.