Abstract
Fibre networks combined with a matrix material in their void phase make the design of novel and smart composite materials possible. Their application is of great interest in the field of advanced paper or as bioactive tissue engineering scaffolds. In the present study, we analyse the mechanical interaction between metallic fibre networks under magnetic actuation and a matrix material. Experimentally validated FE models are combined for that purpose in one joint simulation. High performance computing facilities are used. The resulting strain in the composite’s matrix is not uniform across the sample volume. Instead we show that boundary conditions and proximity to the fibre structure strongly influence the local strain magnitude. An analytical model of local strain magnitude is derived. The strain magnitude of 0.001 which is of particular interest for bone growth stimulation is achievable by this assembly. In light of these findings, the investigated composite structure is suitable for creating and for regulating contactless a stress field which is to be imposed on the matrix material. Topics for future research will be the advanced modelling of the biological components and the potential medical utilisation.
Highlights
Materials incorporating a fibre structure have been an essential constituent in various fields of application for decades[1,2]
The purpose of this present study is to investigate the suitability of a specific fibre-matrix composite material for its suitability as mechanically active tissue engineering scaffold
We have presented above the results for the deformation of a fibre-matrix composite under magnetic actuation
Summary
Materials incorporating a fibre structure have been an essential constituent in various fields of application for decades[1,2]. The mechanical behaviour[9,10,11,12], the thermal conductivity[9,13], or the magnetic response[14,15] are amongst the investigated physical properties The purpose of this present study is to investigate the suitability of a specific fibre-matrix composite material for its suitability as mechanically active tissue engineering scaffold. Magnetic fibre networks could be applied to design heat exchangers of variable drag[31,32] The assembly of this present study has been discussed for its suitability as scaffold in tissue engineering[33]. Global values have been predicted analytically for fibre assemblies[41,42] This present study investigates complete fibre network geometries and analyses the matrix strain on local level. The presented results were part of a dissertation project at the University of Cambridge[19]
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