Release Time:2019-03-10 Hits:
Indexed by: Journal Article
Date of Publication: 2016-06-15
Journal: 计算力学学报
Included Journals: Scopus、CSCD、ISTIC、PKU
Volume: 33
Issue: 3
Page Number: 328-334
ISSN: 1007-4708
Key Words: 等参管单元;边界元法;奇异积分;单元子分法
Abstract: 采用边界元法(BEM )求解实际工程问题时,很大一部分误差来自于离散误差。为此,本文基于Lagrange插值原理,提出了一种三维等参管单元边界元算法,该单元能很好地模拟管状结构的几何外形并对物理量进行高阶插值,大大地消除了离散误差。另外,当在边界元法中使用等参管单元时,提出了一种在等参平面内消除积分奇异性的方法。算例表明,本文算法具有划分网格少,求解精度高的优点。
Prev One:Analytically-integrated radial integration BEM for solving three-dimensional transient heat conduction problems
Next One:A modified Levenberg-Marquardt algorithm for simultaneous estimation of multi-parameters of boundary heat flux by solving transient nonlinear inverse heat conduction problems