扩展有限元法计算裂纹问题的研究

Research of calculating crack problem with Extended Finite Element Method

指出扩展有限元法是近几年发展起来的一种计算方法,在计算裂纹问题中有着独到的优势,介绍了扩展有限元法的理论来源与发展概况,对单位分解法进行了详细阐述,并对改进函数与改进节点的选择等关键技术进行研究,为相关研究提供参考。

Extended Finite Elemnent Method is a new developed method with a unique superiority calculating the crack problemas. The theory resourse and developing situation of XFEM is introduced in this paper, and the concept of PUM is well illustrated in the work. The key technique of enriched function and enriching nodes is studied as well, making a theoretical foundation for further research.