MATHEMATICAL ANALYSIS FOR QUADRILATERAL ROTATED Q1 ELEMENT Ⅲ: THE EFFECT OF NUMERICAL INTEGRATION

• 来源期刊: 计算数学（英文版）
• 学科: 数学
• 关键词: Quadrilateral rotated Q1 element Numerical quadrature.
• 年，卷（期）: 2003,（3）
• 页码范围: 287-294
• 页数: 8页
• 分类号: O1
• 语种: 英文

摘要

This is the third part of the paper for the rotated Q1 nonconforming element on quadrilateral meshes for general second order elliptic problems. Some optimal numerical formulasare presented and analyzed. The novelty is that it includes a formula with only two sampling points which excludes even a Q1 unisolvent set. It is the optimal numerical integrationformula over a quadrilateral mesh with least sampling points up to now.