广东工业大学学报 ›› 2014, Vol. 31 ›› Issue (4): 115-120.doi: 10.3969/j.issn.1007-7162.2014.04.022

• 综合研究 • 上一篇    下一篇

应用叠加单元分析固结问题的有限元程序设计方法

史宏彦,刘姗姗   

  1. 广东工业大学 土木与交通工程学院,广东　广州 510006
  • 收稿日期:2014-04-10 出版日期:2014-12-28 发布日期:2014-12-28
  • 作者简介:史宏彦(1962-)，男，教授，博士，主要研究方向为岩土工程.
  • 基金资助:

    国家自然科学基金资助项目（51178123）

Finite Element Programming for the Superposed Element Used to Analyze Consolidation of Soil

Shi Hong-yan,Liu Shan-shan   

  1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2014-04-10 Online:2014-12-28 Published:2014-12-28

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摘要： 为满足固结问题有限元分析中位移与孔压形函数不同阶次的需要，采用将两个几何形状和大小相同、结点数和布置方式及自由度数不同的单元叠加形成叠加单元.通过比较叠加单元与传统单元的异同点，给出了叠加单元有限元程序设计中关键问题的解决方法，对部分问题还给出了利用FORTRAN77编写的计算程序,并通过算例验证了方法的可行性.

关键词: 叠加单元；固结分析；有限元法；程序设计

Abstract: To meet the different order needs of displacement and pore-pressure shape functions in consolidation problem analysis, it used the superposed element, formed by superposing two elements with the same geometry but different nodal numbers and nodal degree of freedom numbers. Based on the careful comparison of the difference between the superposed element and the ordinary element, the programming method and some SUBROUTINEs designed by FORTRAN77 were given for the superposed element. The feasibility of the method has been proved by giving two examples.

Key words: superposed element; consolidation analysis; finite element method; programming

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