Investigation of Meshing Strategy on Mechanical Behaviour of Hip Stem Implant Design Using FEA

Ikhsan Ikhsan,Aditya Rio Prabowo,Joko Triyono,Jung Min Sohn

doi:10.1515/eng-2020-0087

Ikhsan Ikhsan, Aditya Rio Prabowo + Show 2 more

Open Access

https://doi.org/10.1515/eng-2020-0087

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Abstract

Abstract Hip joint is an important human joints system. The damaged hip joints need to be replaced with artificial hip joints. The Study of the hip joint is very costly therefore another calculation method is demanded to produce good result in acceptable time and cost. Considering this problem, a series of study to assess hip joint performance is conducted using numerical approach. Important parameter for example applied materials are used in the modelling by idealizing Ti-6Al-4V compared to SS 316 L, and stemlengthwas chosen to be 128 mm. ANSYS software was used to analyze models, and designed element size variations were set to be in range 1 to 2.5 mm. The magnitude of force was placed on the femoral head with an angle of 16 ∘ C from the vertical axis. Results showed that SS 316 L material has smaller deformation than Ti material. Whereas Central Processing (CP) time decreases in increasing element size for both materials. In addition, more variations in mesh size are needed to get more accurate convergent results.

Highlights

Hip joint is an important human system which connects the femur and pelvis
ANSYS software was used to analyze models, and designed element size variations were set to be in range 1 to 2.5 mm
Whereas Central Processing (CP) time decreases in increasing element size for both materials

Summary

Introduction

Hip joint is an important human system which connects the femur and pelvis. Hip joint consists of three main parts, namely: femur, femoral head, and rounded socked. The hip is one of most common joints that are most likely to. Total hip replacement has become a very common operation with over 300 000 operations carried out worldwide every year [4]. Appropriate bone and implant geometry is an important factor for successful total hip arthroplasty. Besides other factors that must be considered are age, weight, bone quality, gender, implant costs. In preparing a THR, an orthopedic surgeon carefully selects an implant from the various type [5]

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