不排水不可压缩条件下土体-孔隙流体相互作用的半显式交互解法

Semi-explicit Staggered Method for Undrained,Incompressible Interated Soli-Pore Fluid Problems

对不排水不可压缩条件下土体─孔队流体的相互作用问题，由于受Babuska－Brezzi稳定条件的限制，常规的有限元等插值u-p解法将不能给出正确的结果，本文提出的半显式文工解法可避免这一条件的限制，使得u，p的插值阶数保持一致，文中给出了一些简单的算例以验证本文方法的正确性．

When equal interpolation orders for u-p are used,ordinary FEM will give wrong results for undrained-incompressible interacted soil-pore fluid problems restrained by the Babuska-Brezzi stability condition. The semi-explicit staggered method presented in this paper can avoid these restrained condition and the equal interpolation orders can be used. An example is given to verify the method.