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Finite element simulation of elastohydrodynamic lubrication of soft biological tissues

机译:软组织弹性流体动力润滑的有限元模拟

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In the serosal cavities (e.g. pleural, pericardial) soft tissues slide against each other, lubricated by thin fluid. We used rotational devices to study the tribology of such tissues, which appear to exhibit mixed and hydrodynamic lubrication. To explore mechanism, we modeled the interaction of fluid and soft material in 3D using a simple cylindrical geometry with an uneven solid-fluid interface in rotation. Deformation of the solid, frictional force, and fluid thickness are presented as a function of applied rotational velocity, applied normal load and material properties. The results suggest that the deformation caused by hydrodynamic pressure leads to load-supporting behavior.
机译:在浆膜腔(例如胸膜,心包膜)中,软组织彼此滑动,并由稀薄的液体润滑。我们使用旋转装置研究了这类组织的摩擦学,这些组织似乎表现出混合润滑和流体动力润滑。为了探索机理,我们使用简单的圆柱几何体和旋转中不均匀的固液界面对3D流体和软材料的相互作用进行了建模。固体变形,摩擦力和流体厚度随施加的转速,施加的法向载荷和材料性能而变化。结果表明,由动水压力引起的变形导致了载荷支撑行为。

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