SUPERCONVERGENCE ANALYSIS FOR CUBIC TRIANGULAR ELEMENT OF THE FINITE ELEMENT

• 来源期刊: 计算数学(英文版)
• 关键词: Finite element Superconvergence Projection interpolation.
• 年，卷（期）: 2000,（5）
• 页码范围: 541-550
• 页数: 10页
• 语种: 英文

摘要

In this paper, we construct a projection interpolation for cubic triangular ele- ment by using othogonal expansion triangular method. We show two fundamental formulas of estimation on a special partion and obtain a superconvergence result of 1 -e order higher for the placement function and its tangential derivative on the third order Lobatto points and Gauss points on each edge of triangular element.