Numerical simulation of a crack emanating from a micro-cavity in the orthopedic cement by technical sub modeling of total hip prosthesis

Frattura ed Integrità Strutturale

Moulgada Abdelmadjid¹  Sahli Abderahmane²  Ait Kaci Djafar²  Benbarek Smail³  Zahi Rachid⁴ 

[1] Department of Mechanical Engineering, Ibn khaldoun University Tiaret, 14000, Algeria;Laboratory of Mechanics, Physics of Materials. University of Sidi Bel Abbes 22000, Algeria.;Laboratory of Mechanics, Physics of Materials. University of Sidi Bel Abbes 22000, Algeria;University Center Ahmed ZABANA -Relizane, Algeria;

关键词: Bone Cement;    Crack;    Total Hip Prosthesis;    Stress Intensity Factor;   

DOI  :  

来源: DOAJ

【 摘 要 】

PMMA has important micro structural heterogeneities such as cavities, and its elastic behavior is greatly affected by the presence of defects that may imply its weakening and cause failure. In areas of high concentrations of stress and due to the presence of cavities, micro cracks appear after crushing cavities due to patient movements, and grow and weld to each other until they form a macro     fissure that propagates until the total removal of the prosthesis.. In this study, the existence of a crack emanating from  a cavity with a diameter of 0.7 mm was assumed; our assessment takes into account two parameters, the position of the crack in the cement and we calculated the stress intensity factor (SIF) in the proximal part of orthopedic cement.

【 授权许可】

Unknown