In this paper,a class of new immersed interface finite element methods (IIFEM) is developed to solve elasticity interface problems with homogeneous and non-homogeneous jump conditions in two dimensions.Simple non-body...In this paper,a class of new immersed interface finite element methods (IIFEM) is developed to solve elasticity interface problems with homogeneous and non-homogeneous jump conditions in two dimensions.Simple non-body-fitted meshes are used.For homogeneous jump conditions,both non-conforming and conforming basis functions are constructed in such a way that they satisfy the natural jump conditions. For non-homogeneous jump conditions,a pair of functions that satisfy the same non-homogeneous jump conditions are constructed using a level-set representation of the interface.With such a pair of functions,the discontinuities across the interface in the solution and flux are removed;and an equivalent elasticity interface problem with homogeneous jump conditions is formulated.Numerical examples are presented to demonstrate that such methods have second order convergence.展开更多
基金国家自然科学基金(the National Natural Science Foundation of China under Grant No.60773062,No.60673045)教育部科学技术研究重点项目(the Key Scientific and Technical Research Project of Ministry of Education of China under Grant No.206012)河北省教育厅科研计划重点项目(the Key Scientific Research Project of Department of Hebei of Education of China under Grant No.2005001D)
基金国家自然科学基金( the National Natural Science Foundation of China under Grant No.60773062) 教育部科学技术研究重点项目( the Key Scientific and Technical Research Project of Ministry of Education of China under Grant No.206012) +1 种基金河北省教育厅科研计划重点项目( the Key Scientific Research Project of Department of Hebei Education of China under Grant No.2005001D) 河北省自然科学基金资助项目( the Natural Science Foundation of Hebei Province of China under Grant No.2008000633)
基金supported by the US ARO grants 49308-MA and 56349-MAthe US AFSOR grant FA9550-06-1-024+1 种基金he US NSF grant DMS-0911434the State Key Laboratory of Scientific and Engineering Computing of Chinese Academy of Sciences during a visit by Z.Li between July-August,2008.
文摘In this paper,a class of new immersed interface finite element methods (IIFEM) is developed to solve elasticity interface problems with homogeneous and non-homogeneous jump conditions in two dimensions.Simple non-body-fitted meshes are used.For homogeneous jump conditions,both non-conforming and conforming basis functions are constructed in such a way that they satisfy the natural jump conditions. For non-homogeneous jump conditions,a pair of functions that satisfy the same non-homogeneous jump conditions are constructed using a level-set representation of the interface.With such a pair of functions,the discontinuities across the interface in the solution and flux are removed;and an equivalent elasticity interface problem with homogeneous jump conditions is formulated.Numerical examples are presented to demonstrate that such methods have second order convergence.