This work models the fluid-structure interactions associated with separating a solid from a soft elastic film in a liquid environment. One side of the soft film is permanently attached to a rigid substrate. The ensuing liquid flow and elastic deformations are derived by considering a system of partial differential equations, that govern the mechanics of the separation process. A finite element based computational scheme is developed to solve the governing equations and predict the resultant forces acting on the solid. It is shown that the resulting forces are influenced by the elasticity of the film for an initial duration and by the viscosity of the liquid at larger times. The proposed model is utilized to shed insights into the mechanics of the separation process in constrained-surface stereolithography process.

中文翻译：

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有效且高效地表征软涂层上的润滑流动

这项工作模拟了与液体环境中固体与软弹性膜分离相关的流固耦合。软膜的一侧永久附着在刚性基材上。随后的液体流动和弹性变形是通过考虑控制分离过程力学的偏微分方程组推导出来的。开发了一种基于有限元的计算方案来求解控制方程并预测作用在固体上的合力。结果表明，所产生的力在初始持续时间内受薄膜弹性的影响，在较大时间受液体粘度的影响。所提出的模型用于深入了解约束表面立体光刻工艺中分离工艺的机制。