A smoothed coupled NS/nES-FEM for dynamic analysis of 2D fluid–solid interaction problems

作者：

Highlights：

• NS/nES-FEM for dynamic analysis of 2D fluid–solid interaction problems is proposed.

• NS-FEM-T3 is used for fluid domain, while nES-FEM is used for the solid.

• Gradient smoothing technique of NS/nES-FEM improves significantly the solution.

• A simple lump mass matrix for nES-FEM is proposed.

• NS/nES-FEM provides more accurate results than those of existing FEM/FEM models.

摘要

•NS/nES-FEM for dynamic analysis of 2D fluid–solid interaction problems is proposed.•NS-FEM-T3 is used for fluid domain, while nES-FEM is used for the solid.•Gradient smoothing technique of NS/nES-FEM improves significantly the solution.•A simple lump mass matrix for nES-FEM is proposed.•NS/nES-FEM provides more accurate results than those of existing FEM/FEM models.

论文关键词：Numerical methods,Node-based smoothed finite element method (NS-FEM),n-Sided polygonal edge-based smoothed finite element method (nES-FEM),Fluid–solid interaction problems,Gradient smoothing technique,Dynamic analysis

论文评审过程：Available online 7 February 2014.

论文官网地址：https://doi.org/10.1016/j.amc.2014.01.052