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DYNAMIC CONTACT ANALYSIS OF TOTAL HIP PROSTHESIS DURING STUMBLING CYCLE

S. SHANKAR

Department of Mechatronics Engineering, Kongu Engineering College, Erode, Tamilnadu, India

Corresponding author.

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and

M. MANIKANDAN

Department of Mechanical Engineering, Kongu Engineering College, Erode, Tamilnadu, India

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https://doi.org/10.1142/S0219519414500419Cited by:8 (Source: Crossref)

Abstract

The estimation of the hip joint contact stresses and contact pressure distribution during stumbling activities is a critical task for selecting the best material pair in the hip prosthesis design. This paper utilizes a three-dimensional finite element model of acetabular component to analyze the dynamic stumbling activity using ANSYS^®. The present study investigates the maximum von Mises stress, contact pressure and deformation developed for different combinations of materials under the stumbling load condition. The different combination of bearing couplings considered for the analysis are metal in contact with plastic, metal on metal, metal on ceramic, ceramic on plastic, ceramic on metal and ceramic on ceramic combinations. The results concluded that the Alumina femoral head paired with ultra-high molecular weight polyethylene (UHMWPE) cup reduces the maximum von Mises stress and maximum contact pressure developed between the interface regions when compared with other combinations. The obtained results are compared with the result of Hai-bo-Jiang et al., for available combinations, and higher correlation of 92% was found between the two results.

Keywords:

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