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A finite element simulation of MOM (metal‐on‐metal) hip implant
Author(s) -
Chaturvedi Sumita,
Bharti Prem Kumar,
Yadav Saurabh Kumar,
Singh Saumya
Publication year - 2019
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.1450
Subject(s) - finite element method , reynolds equation , lubrication , bearing (navigation) , lubricant , mechanics , materials science , joint (building) , nonlinear system , newton's method , convergence (economics) , work (physics) , newtonian fluid , mathematics , mathematical analysis , reynolds number , structural engineering , computer science , mechanical engineering , physics , engineering , composite material , turbulence , quantum mechanics , artificial intelligence , economics , economic growth
The entire load in human body is supported by the hip joint bearing. In the present work, elastohydrodynamic lubrication analysis of metal and metal hip implant is performed by using Newtonian lubricant. The Reynolds equation coupled with stress equilibrium equation has been used to get the pressure and performance characteristics of hip joint bearing. The governing Reynolds equation is nonlinear and cannot be solved by using close form solution methods. The finite element method and Newton‐Raphson method are used to obtain solution of the present equation. It has been observed that numerical convergence is much faster with NR method. From the results, it is observed that FEM with modified Newton‐Raphson method has the capability to compute accurate results for realistic modelling.