Isogeometric analysis based on extended Catmull-Clark subdivision

Isogeometric analysis based on extended Catmull-Clark subdivision
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基于扩展 Catmull-Clark 细分的等几何分析

DOI:
10.1016/j.camwa.2015.11.012
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发表时间:
2016
影响因子:
2.9
通讯作者:
Zhang Yongjie
Zhang Yongjie
中科院分区:
数学2区
文献类型:
--
作者:
Pan Qing;Xu Guoliang;徐岗;Zhang Yongjie

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在本文中,我们提出了一个基于细分的有限元方法作为一个集成的等几何分析(伊加)框架,采用统一的表示几何建模和有限元模拟。本文从Catmull-Clark曲面细分的极限形式出发,导出了处处具有C1连续性的边界细分格式的有限元函数空间。它能够精确地表示复杂的几何形状与任何形状的边界表示为分段三次B样条曲线。它与现代计算机辅助设计(CAD)软件系统兼容。这种策略的优点是允许任意拓扑的四边形网格。在这项工作中,计算域与平面几何被认为是。基于Bramble-Hilbert引理建立了Catmull-Clark曲面细分函数的逼近性质。通过三个泊松方程的Dirichlet边界条件进行数值试验,以证实理论证明。
In this paper, we propose a subdivision-based finite element method as an integration of the isogeometric analysis (IGA) framework which adopts the uniform representation for geometric modeling and finite element simulation. The finite element function space is induced from the limit form of Catmull–Clark surface subdivision containing boundary subdivision schemes which has C 1 continuity everywhere. It is capable of exactly representing complex geometries with any shaped boundaries which are represented as piecewise cubic B-spline curves. It is compatible with modern Computer Aided Design (CAD) software systems. The advantage of this strategy admits quadrilateral meshes of arbitrary topology. In this work, the computational domains with planar geometries are considered. We establish the approximation properties of Catmull–Clark surface subdivision function based on the Bramble–Hilbert lemma. Numerical tests are performed through three Poisson’s equations with the Dirichlet boundary condition to corroborate the theoretical proof.
DOI: 10.1016/j.cma.2013.09.014
发表时间: 2014-02
影响因子: 7.2
作者:
K. Johannessen;T. Kvamsdal;T. Dokken
通讯作者: K. Johannessen;T. Kvamsdal;T. Dokken
DOI: 10.1145/3596711.3596728
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