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

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Published Jun 22, 2019
DOI https://doi.org/10.3221/IGF-ESIS.49.54

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Sahli Abderahmane
Laboratory of Mechanics, Physics of Materials. University of Sidi Bel Abbes 22000, Algeria.
http://orcid.org/0000-0002-5183-1168 Ait Kaci Djafar
Laboratory of Mechanics, Physics of Materials. University of Sidi Bel Abbes 22000, Algeria.
Zahi Rachid
University Center Ahmed ZABANA -Relizane, Algeria
Moulgada Abdelmadjid
Department of Mechanical Engineering, Ibn khaldoun University Tiaret, 14000, Algeria
Benbarek Smail
Laboratory of Mechanics, Physics of Materials. University of Sidi Bel Abbes 22000, Algeria

Abstract

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.

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    Issue
    Vol. 13 No. 49 (2019): July 2019
    Section
    Miscellanea

    How to Cite

    Abderahmane, S. (2019) “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, 13(49), pp. 586–598. doi: 10.3221/IGF-ESIS.49.54.

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