In this study, three layers of the ascending aorta in respect to the time and space at various blood pressures have been simulated. Two well-known commercial Finite Element (FE) software have used to be able to provide a range of reliable numerical results while independent on the software type. The radial displacement versus the time as well as the peripheral stress and von Misses stress of the aorta have calculated. The aorta model was validated using the Differential Quadrature Method (DQM) solution and, then, in order to design Functionally Graded Materials (FGMs) with different heterogeneous indexes for the artificial vessel, two different materials have been employed. Fluid Structure Interaction (FSI) simulation have been carried out on the FGM and a natural vessel of the human body. The heterogeneous index defines the variation of the length in a function. The blood pressure was considered to be a function of both the time and location. Finally, the response characteristics of Functionally Graded Biomaterials (FGBMs) models with different values of heterogeneous material parameters was determined and compared to the behaviour of a natural vessel. The results showed a very good agreement between the numerical findings of the FGM materials and that of the natural vessel. The findings of this study not only may have implications to understand the performance of different FGMs in bearing the stress and deformation in comparison to the natural human vessels, but also to provide information for the biomaterials expert to be able to select a suitable material
- Thick cylinder
- Artificial vessel
- Finite element method
- Functionally graded materials
- ©2016 The Author(s)
This is an Accepted Manuscript; not the final Version of Record. You are encouraged to use the final Version of Record that, when published, will replace this manuscript and be freely available under a Creative Commons licence.