Numerical analysis of Brazilian bioceramic discs under diametrical compression loading

• Published in: Computational materials science Vol. 45; no. 2; pp. 443 - 448
• Main Authors: Ouinas, D., Bouiadjra, B. Bachir, Serier, B., Benderdouche, N., Ouinas, A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.2009; Elsevier
• Subjects: Bioceramics; Condensed matter: structure, mechanical and thermal properties; Crack; Exact sciences and technology; Fatigue, brittleness, fracture, and cracks; Mechanical and acoustical properties of condensed matter; Mechanical properties of solids; Notch; Physics; Stress concentration factor (SCF); Stress intensity factor (SIF); Total hip prosthesis (THP); 81.05.Je; Stress intensity factor (SIF); Notch; Total hip prosthesis (THP); Bioceramics; Stress concentration factor (SCF); 87.85.gp; Crack; Aluminium oxide; Stress concentration; Notched test piece; Ruptures; Digital simulation; Hot isostatic pressing; Zirconium silicate; Zircon; Orthopaedics; Crack propagation; Finite element method; Biomedical materials; Stress intensity factors; Stress distribution; Brazilian disk test
• ISSN: 0927-0256; 1879-0801
• DOI: 10.1016/j.commatsci.2008.11.004

This paper outlines of the fracture behaviour of discs made of alumina and zircon orthopedic bioceramics under diametrical compression loading. The finite element method is used to analyze the stress distribution on acetabulum cup of a total hip prosthesis. The elements dimensioning optimization of a bioceramic total hip prosthesis is essential in order to reduce the stress concentration fields. The most loaded area in induced tensile stress causing the fracture is determined. Some results on the evolution of the stress concentration factor and the stress intensity factor of the bifurcated cracks propagating under compression loading in Brazilian discs in mixed mode have been obtained.