论文标题
有限元网格中的表面粗糙度
Surface roughness in finite element meshes
论文作者
论文摘要
我们提出了一种实用的方法,可以根据名义平滑表面的非结构化网格来构建具有给定的自相关功能的一般粗糙表面的网格。该方法建立在一种众所周知的方法基础上,以使用自相关矩阵的分解来构建与白噪声相关的随机数。我们讨论了在表面粗糙度的物理重建中产生的重要细节,并提供了软件实施,以在科学和工程的各个领域中使用广泛的数值方法来使用该方法。
We present a practical approach for constructing meshes of general rough surfaces with given autocorrelation functions based on the unstructured meshes of nominally smooth surfaces. The approach builds on a well-known method to construct correlated random numbers from white noise using a decomposition of the autocorrelation matrix. We discuss important details arising in practical applications to the physicalmodeling of surface roughness and provide a software implementation to enable use of the approach with a broad range of numerical methods in various fields of science and engineering.