HYBRID FINITE VOLUME/FINITE ELEMENT METHODS FOR LINEAR ELASTICITY PROBLEMS
主 题: HYBRID FINITE VOLUME/FINITE ELEMENT METHODS FOR LINEAR ELASTICITY PROBLEMS
报告人: Prof. Xiaoping Xie (Sichuan University)
时 间: 2011-01-05 上午10:00-11:00
地 点: 理科一号楼1418
This talk is to introduce a coupling approach of finite element and finite volume for linear elasticity problems. A hybrid stress quadrilateral finite element discretization is used for the constitutive equation with continuous piecewise isoparametric bilinear displacement interpolation and two types of stress modes, and a finite volume formulation is used for the equilibrium equation. The resultant methods are free from Poisson locking in the sense that the error bounds in the a priori estimates are independent of the relevant Lame constant $\\lambda$. Numerical experiments confirm the theoretical results.