基于有限元的角膜在压力和压头加载下的力学模型。
Finite element based mechanical models of the cornea for pressure and indenter loading.
作者信息
Vito R P, Carnell P H
机构信息
School of Mechanical Engineering, Georgia Institute of Technology, Atlanta 30332-0405.
出版信息
Refract Corneal Surg. 1992 Mar-Apr;8(2):146-51.
BACKGROUND
In this article, we examine the finite element method and its use in mechanical modeling of the cornea.
METHODS
Both linear elastic and geometrically nonlinear models are considered. The effects of corneal geometry, boundary conditions, thickness, and the number of layers in the model are determined.
RESULTS
Results indicate that, for intraocular pressure loading, the thickness and the choice of boundary conditions at the limbus are significant.
CONCLUSIONS
A model of tonometry showed that simulating the layered nature of the cornea and including the increased flexibility of large deformation are critical.
背景
在本文中，我们研究了有限元方法及其在角膜力学建模中的应用。
方法
考虑了线性弹性模型和几何非线性模型。确定了角膜几何形状、边界条件、厚度以及模型中层数的影响。
结果
结果表明，对于眼内压加载，角膜厚度和角膜缘边界条件的选择具有重要意义。
结论
眼压测量模型表明，模拟角膜的分层性质并考虑大变形时增加的柔韧性至关重要。
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