数值流形方法中覆盖位移函数的改进
摘要:通过对数值流形方法刚度矩阵形成的研究,提出一种改进的覆盖位移函数,以改善刚度矩阵计算。分析表明,改进的覆盖位移函数可使刚度矩阵的局部大数数量级明显的降低,提高计算效率,给矩阵求解提供适当的意见,并给出算例验证方法的正确性。
Abstract:Based on research of the formation of stiffness matrix in the numerical manifold method, physical cover displacement function is improved to mend the stiffness matrix that relatively huge numerical value appears in part of that. The result shows that locally huge numerical value is greatly reduced as adoption of improved formulation of physical cover displacement function, and calculation efficiency is enhanced. This supplies a reasonable suggestion for the solution of the stiffness matrix. An example testifies the validity of the proposed approach.
中文标题:
数值流形方法中覆盖位移函数的改进
Improvement of Cover Displacement Functions in the Numerical Manifold Method
作者:
周小义1,邓安福1,黄润英2
Zhou Xiaoyi1,Deng Anfu1,Huang Runying2
作者简介:周小义,1979年生,男,河南南阳人,在读博士研究生,主要从事岩土工程研究。E-mail:zhouxiaoyi2005@126.com
通讯地址:
1 重庆大学土木工程学院重庆 400045; 2 重庆煤田地质研究所重庆 400042
1.CollegeofCivilEngineering,ChongqingUniversity,Chongqing400045; 2.ChongqingCoalGeologyInstitute,Chongqing400042China
中图分类号:TB115
出版物:岩土工程技术
收稿日期:2006-11-21
网络出版日期:2021-07-10
关键词:数值流形方法,刚度矩阵,覆盖位移函数,形心坐标
Key words:numerical manifold method,stiffness matrix,cover displacement function,center coordinate of figure
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