This thesis presents the development of a comprehensive finite element model for the human erythrocyte. The composite cell membrane is described by a two-layer, viscoelastic, anisotropic model, which is numerically implemented with tailored finite elements. A preconditioner is developed to remedy the ill-conditioning problem attributed to the thinness of the membrane. A novel monolithic fluid-structure interaction approach that allows for large rotations of the structure realizes the coupling of the membrane to the cytosol and to the blood plasma. The resulting numerical model shows excellent agreement with experimental data obtained with laser trap experiments. Furthermore, for the first time, all experimentally observed motions of an erythrocyte in steady shear flow can be reproduced numerically.
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This thesis presents the development of a comprehensive finite element model for the human erythrocyte. The composite cell membrane is described by a two-layer, viscoelastic, anisotropic model, which is numerically implemented with tailored finite elements. A preconditioner is developed to remedy the ill-conditioning problem attributed to the thinness of the membrane. A novel monolithic fluid-structure interaction approach that allows for large rotations of the structure realizes the coupling o...
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