Finite element modelling approaches for well-ordered porous metallic materials for orthopaedic applications: cost effectiveness and geometrical considerations. Issue 8 (10th June 2016)

• Record Type: Journal Article
• Authors: Quevedo González, Fernando José; Nuño, Natalia
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 19:Issue 8(2016)
• Page Start: 845
• Page End: 854
• Publication Date: 2016-06-10
• Subjects: Well-ordered porous materials -- cellular materials -- finite element -- mechanical properties -- cost effectiveness -- orthopaedic applications; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2015.1075009
• Languages: English
• ISSNs: 1025-5842

Abstract

Abstract: The mechanical properties of well-ordered porous materials are related to their geometrical parameters at the mesoscale. Finite element (FE) analysis is a powerful tool to design well-ordered porous materials by analysing the mechanical behaviour. However, FE models are often computationally expensive. This article aims to develop a cost-effective FE model to simulate well-ordered porous metallic materials for orthopaedic applications. Solid and beam FE modelling approaches are compared, using finite size and infinite media models considering cubic unit cell geometry. The model is then applied to compare two unit cell geometries: cubic and diamond. Models having finite size provide similar results than the infinite media model approach for large sample sizes. In addition, these finite size models also capture the influence of the boundary conditions on the mechanical response for small sample sizes. The beam FE modelling approach showed little computational cost and similar results to the solid FE modelling approach. Diamond unit cell geometry appeared to be more suitable for orthopaedic applications than the cubic unit cell geometry.