一种求三维弹性力学基本解析解的特征方程解法

傅向荣; 袁明武; 岑松; 田歌

doi:10.3879/j.issn.1000-0887.2012.10.003

一种求三维弹性力学基本解析解的特征方程解法

doi: 10.3879/j.issn.1000-0887.2012.10.003

傅向荣^1,,
袁明武²,
岑松^3,4,
田歌¹

1.
中国农业大学土木水利学院,北京 100083;
北京大学工学院,北京 100871;
清华大学航天航空学院工程力学系,北京 100084;
清华大学航天航空学院教育部应用力学重点实验室高性能数值仿真中心,北京 100084

详细信息

通讯作者:
傅向荣(1972—), 男, 湖南人, 副教授, 博士(E-mail: fuxr@cau.edu.cn);岑松(1972—), 男, 福建人, 教授, 博士(联系人. Tel: +86-10-62782452; E-mail: censong@tsinghua.edu.cn).

中图分类号: O343.2;O242.2
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出版历程
- 收稿日期: 2011-08-19
- 修回日期: 2012-04-27
- 刊出日期: 2012-10-15

A Characteristic Equation Solution Strategy for Deriving the Fundamental Analytical Solutions of 3D Isotropic Elasticity

1.
¹College of Water Conservancy & Civil Engineering, China Agricultural University, Beijing 100083, P.R.China;²School of Engineeing, Peking University, Beijing 100871, P.R.China;³Department of Engineering Mechanics,School of Aerospace, Tsinghua University, Beijing 100084, P.R.China;⁴Key Laboratory of Applied Mechanics & High Performance Computing Center, School of Aerospace, Tsinghua University, Beijing 100084, P.R.China

Funds: 国家自然科学基金资助项目（10872108;10876100）;国家重点基础研究发展计划基金资助项目（2010CB731503;2010CB832701）;教育部新世纪优秀人才支持计划基金资助项目（NCET-07-0477）;中国航天科学基金资助项目（ASFC）

摘要

摘要: 提出了一种简单的推导各向同性材料，三维弹性力学问题基本解析解的特征方程解法．应用三维问题控制微分方程的算子矩阵，通过计算其行列式可得到问题特征通解所需满足的特征方程．将满足各种不同简化特征方程的特征通解，代入到微分方程算子矩阵所对应的不同的缩减伴随矩阵，可推导得出相应的三维弹性力学问题的基本解析解，包括B-G解、修正的P-N（P-N-W）解和类胡海昌解．进一步对各类多项式形式的基本解析解的独立性进行了讨论．这些工作为构造数值方法中所需的完备独立的解析试函数奠定了基础．
- 特征方程解法 /
- 基本解析解 /
- 修正的P-N（P-N-W）解 /
- 胡海昌解 /
- 解析试函数
Abstract: A simple characteristic equation solution strategy for deriving the fundamental analytical solutions of 3D isotropic elasticity was proposed. By calculating the determinant of the differential operator matrix obtained from the governing equations of 3D elasticity, the characteristic equation which the characteristic general solution vectors must satisfy was established. Then, by substitution of the characteristic general solution vectors, which satisfied various reduced characteristic equations, into various reduced adjoint matrices of the differential operator matrix, the corresponding fundamental analytical solutions for isotropic 3D elasticity, including B-G solutions, modified P-N (P-N-W) solutions, and quasi HU Hai-chang solutions, could be obtained. Furthermore, the independence characters of various fundamental solutions in polynomial form were also discussed in details. These works provide a basis for constructing complete and independent analytical trial functions used in numerical methods.
- characteristic equation solution strategy /
- fundamental analytical solution /
- modified P-N (P-N-W) solution /
- HU Hai-chang solution /
- analytical trial function

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参考文献(16)

[1]	LONG Yu-qiu, CEN Song, LONG Zhi-fei. Advanced Finite Element Method in Structural Engineering[M]. Beijing: Tsinghua University Press; Berlin: Springer-Verlag, 2009.
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一种求三维弹性力学基本解析解的特征方程解法

doi: 10.3879/j.issn.1000-0887.2012.10.003

通讯作者:
傅向荣(1972—), 男, 湖南人, 副教授, 博士(E-mail: fuxr@cau.edu.cn);岑松(1972—), 男, 福建人, 教授, 博士(联系人. Tel: +86-10-62782452; E-mail: censong@tsinghua.edu.cn).

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A Characteristic Equation Solution Strategy for Deriving the Fundamental Analytical Solutions of 3D Isotropic Elasticity

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目录

留言板

一种求三维弹性力学基本解析解的特征方程解法

doi: 10.3879/j.issn.1000-0887.2012.10.003

通讯作者: 傅向荣(1972—), 男, 湖南人, 副教授, 博士(E-mail: fuxr@cau.edu.cn);岑松(1972—), 男, 福建人, 教授, 博士(联系人. Tel: +86-10-62782452; E-mail: censong@tsinghua.edu.cn).

计量

出版历程

A Characteristic Equation Solution Strategy for Deriving the Fundamental Analytical Solutions of 3D Isotropic Elasticity

计量

出版历程

目录

通讯作者:
傅向荣(1972—), 男, 湖南人, 副教授, 博士(E-mail: fuxr@cau.edu.cn);岑松(1972—), 男, 福建人, 教授, 博士(联系人. Tel: +86-10-62782452; E-mail: censong@tsinghua.edu.cn).