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Journal of computational physics

机译:计算物理学杂志

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We investigate the curvature effect of a thin, curved elastic interface that separates twosubdomains and exerts a pressure due to a curvature effect. This pressure, which we referto as interface pressure, is similar to the surface tension in fluid mechanics. It is important insome applications, such as the canopy of parachutes, biological membranes of cells, balloons, airbags, etc., as it partially balances a pressure jump between the two sides of aninterface. In this paper, we show that the interface pressure is equal to the trace of thematrix product of the curvature tensor and the Cauchy stress tensor in the tangent plane. We derive the theory for interfaces in both 2-D and 3-D, and present numerical discretizationsfor computing the quality over triangulated surfaces.
机译:我们研究了一个薄的弯曲弹性界面的曲率效应,该界面将两个子域分开并由于曲率效应而施加压力。该压力(我们称为界面压力)类似于流体力学中的表面张力。在某些应用中,例如降落伞的顶篷,细胞的生物膜,气球,安全气囊等,这很重要,因为它部分平衡了界面两侧之间的压力跳跃。在本文中,我们表明界面压力等于切平面中曲率张量和柯西应力张量的矩阵乘积的轨迹。我们推导了二维和3-D界面的理论,并提出了用于计算三角表面质量的数值离散化方法。

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