Finite element modelling and characterization of 3D cellular microstructures for the design of a cementless biomimetic porous hip stem
- Authors
- Mehboob, Hassan; Tarlochan, Faris; Mehboob, Ali; Chang, Seung-Hwan
- Issue Date
- Jul-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Hip stem; Finite element analysis; Porous cellular microstructures; Mechanical testing
- Citation
- MATERIALS & DESIGN, v.149, pp 101 - 112
- Pages
- 12
- Journal Title
- MATERIALS & DESIGN
- Volume
- 149
- Start Page
- 101
- End Page
- 112
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/1976
- DOI
- 10.1016/j.matdes.2018.04.002
- ISSN
- 0264-1275
1873-4197
- Abstract
- Titanium porous cellular microstructures are commonly used in bone mimetic implants. The orientations of the internal strut architectures of these microstructures affect the mechanical performance under various loads; however, poor architectural designs may result in their failure. Three-dimensional (3D) finite element models of cubic, diamond, and body-centered cubic (BCC) geometries were constructed with 1-4 numbers of unit cells and 4-10-mm unit cell size. Mechanical testing of the finite models of the cubic, diamond, and BCC structures with porosities of 20-90% was performed under compression, bending, and torsional loads. The BCC structure showed moderate and relatively isotropic mechanical properties compared with those of the diamond and cubic structures. A design space for a BCC porous structure with a porosity of 40-65% was estimated to model a complete porous stem to mimic the bone properties. Furthermore, the stems with the determined porous mechanical properties of the BCC microstructures with 20-90% porosities were tested under physiological loading conditions. It was found that a porosity of 47.3% of the BCC structure exhibits the closest stiffness (469 N/mm) to an intact bone (422 N/mm). This was predicted by our suggested design space of the porosity. (c) 2018 Elsevier Ltd. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/1976)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.