title: Numerical modelling and verification of Polish ventricular assist device.
abstract: The developed multiscale model of blood chamber of POLVAD (Polish ventricular assist device) was introduced. The tension test for polymer and digital image correlation (DIC) were performed for verification of the strains and displacements obtained in the numerical model of POLVAD_EXT. The numerical simulations were carried out in conditions given in the experiment to compare the results obtained on external surfaces of blood chamber of the POLVAD_EXT. The examined polymer applied in the POLVADs is sensitive to changes of temperature and this observation is considered in all prepared numerical models. The comparison of experimental and numerical results shows acceptable coincidence. There are some heterogeneous distributions of strains in experiment with respect to analysis of computed parameters. The comparison of two versions of blood chambers (POLVAD and POLVAD_EXT) in numerical analysis shows that POLVAD_EXT construction is better with respect to analysis of strain and stress. The maximum values of computed parameters are located in the regions between connectors on the internal surfaces of blood chambers of POLVAD.
authors.affiliation: AGH University of Science and Technology, 30-059 Kraków, Poland.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Milenin
authors.forename: Magdalena
authors.initials: M
authors.lastname: Kopernik
authors.forename: Dorota
authors.initials: D
authors.lastname: Jurkojć
authors.forename: Maciej
authors.initials: M
authors.lastname: Gawlikowski
authors.forename: Tomasz
authors.initials: T
authors.lastname: Rusin
authors.forename: Maciej
authors.initials: M
authors.lastname: Darłak
authors.forename: Roman
authors.initials: R
authors.lastname: Kustosz
mesh_terms: D020342:Finite Element Analysis; D006353:Heart-Assist Devices; D008422:Materials Testing; D008955:Models, Cardiovascular; D009716:Numerical Analysis, Computer-Assisted; D011044:Poland; D015203:Reproducibility of Results; D013314:Stress, Mechanical