长江科学院院报 ›› 2013, Vol. 30 ›› Issue (12): 91-96.DOI: 10.3969/j.issn.1001-5485.2013.12.017

• 水工结构与材料 • 上一篇    下一篇

任意形状覆盖的数值流形方法初步研究

苏海东,祁勇峰,龚亚琦,颉志强,崔建华   

  1. 长江科学院材料与结构研究所,武汉430010
  • 收稿日期:2013-07-04 修回日期:2013-12-10 出版日期:2013-12-10 发布日期:2013-12-10
  • 作者简介:苏海东(1968-),男,湖北武汉人,教授级高级工程师,博士,主要从事水工结构数值分析工作和计算方法研究,(电话)027-82829754(电子信箱)suhd@mail.crsri.cn。
  • 基金资助:
    中央级公益性科研院所基本科研业务费项目(CKSF2013031, CKSF0210012)

Preliminary Research of Numerical Manifold Method Based onCovers of Arbitrary Shape

SU Hai-dong,QI Yong-feng,GONG Ya-qi,XIE Zhi-qiang,CUI Jian-hua   

  1. Department of Material and Engineering Structure,Yangtze River Scientific Research Institute,Wuhan 430010,China
  • Received:2013-07-04 Revised:2013-12-10 Online:2013-12-10 Published:2013-12-10

摘要: 在前期研究部分重叠的矩形覆盖基础上,首次提出基于任意形状覆盖的数值流形方法,其特点是:独特的数学覆盖形式,即任意形状的覆盖+条形的覆盖重叠区域;以独立覆盖为主的分析方式;单位分解函数表述的独特性及严格的插值性。对此方法展开初步研究,给出任意形状覆盖的基本形式,以及基于完全重叠覆盖和自由度之间约束关系的实现方法,算例分析初步验证了该方法的有效性。

关键词: 数值流形方法, 任意形状覆盖, 部分重叠覆盖, 单位分解

Abstract: Numerical Manifold Method (NMM) with covers of arbitrary shape is presented for the first time based on previous research of partially overlapping rectangular covers. The characteristics of this method are as follows covers with arbitrary shape are connected with each other through strips; it has a unique analysis mode mainly involving independent covers; the functions of the Partition of Unity(PU) are presented in a special way with strict interpolation properties. The fundamental forms of covers of arbitrary shape,as well as the realization method based on totally overlapping covers by using freedom constraint are given. Finally,the validity of the new method is demonstrated by a numerical example.

Key words: Numerical Manifold Method (NMM), covers of arbitrary shape, partially overlapping covers, Partition of Unity(PU)

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