中国民航大学学报

• 基础科学 • 上一篇    

Hamilton体系下的扩展有限元方法

卿光辉,沈雄   

  1. (中国民航大学航空工程学院,天津 300300)
  • 收稿日期:2013-10-18 修回日期:2013-12-09 出版日期:2015-02-21 发布日期:2015-01-22
  • 作者简介:卿光辉(1968—),男,湖南新化人,教授,博士,研究方向为复合材料力学.
  • 基金资助:

    中国民航大学科研基金项目(2012kye07)

Extended finite element method based on Hamilton theory

QING Guang-hui,SHEN Xiong   

  1. (College of Aeronautical Engineering,CAUC,Tianjin 300300,China)
  • Received:2013-10-18 Revised:2013-12-09 Online:2015-02-21 Published:2015-01-22

摘要:

基于Hamilton 体系下的弹性力学理论,推导了扩展有限元法的有关公式。具体计算了含裂纹的等厚度薄板的应力强度因子,数值分析所得结果与精确解进行了比较,证明了本文方法的正确性。本文为扩展有限元研究提供了一种新的数值计算方法,拓展了扩展有限元的基础理论。

关键词: 扩展有限元, 裂纹, Hamilton 体系, 应力强度因子

Abstract:

Based on the elasticity theory of Hamilton system,the corresponding formulae of extended finite element method are derived,and the stress intensity factor of the equal thickness thin plate with crack is calculated. The numerical result is compared with the exact solution,verifying the effectiveness of this method. A new numerical approach to study the extended finite element is offered,and the basic theory of the extended finite element is expanded.

Key words: extended finite element method, crack, Hamilton system, stress intensity factor

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