Comput Math Methods Med - Fluid structural analysis of human cerebral aneurysm using their own wall mechanical properties.

Tópicos

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Resumo

Computational Structural Dynamics (CSD) simulations, Computational Fluid Dynamics (CFD) simulation, and Fluid Structure Interaction (FSI) simulations were carried out in an anatomically realistic model of a saccular cerebral aneurysm with the objective of quantifying the effects of type of simulation on principal fluid and solid mechanics results. Eight CSD simulations, one CFD simulation, and four FSI simulations were made. The results allowed the study of the influence of the type of material elements in the solid, the aneurism's wall thickness, and the type of simulation on the modeling of a human cerebral aneurysm. The simulations use their own wall mechanical properties of the aneurysm. The more complex simulation was the FSI simulation completely coupled with hyperelastic Mooney-Rivlin material, normal internal pressure, and normal variable thickness. The FSI simulation coupled in one direction using hyperelastic Mooney-Rivlin material, normal internal pressure, and normal variable thickness is the one that presents the most similar results with respect to the more complex FSI simulation, requiring one-fourth of the calculation time.

Resumo Limpo

comput structur dynam csd simul comput fluid dynam cfd simul fluid structur interact fsi simul carri anatom realist model saccular cerebr aneurysm object quantifi effect type simul princip fluid solid mechan result eight csd simul one cfd simul four fsi simul made result allow studi influenc type materi element solid aneur wall thick type simul model human cerebr aneurysm simul use wall mechan properti aneurysm complex simul fsi simul complet coupl hyperelast mooneyrivlin materi normal intern pressur normal variabl thick fsi simul coupl one direct use hyperelast mooneyrivlin materi normal intern pressur normal variabl thick one present similar result respect complex fsi simul requir onefourth calcul time

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