MIXED FINITE ELEMENT FORMULATION FOR NON-ISOTHERMAL POROUS MEDIA IN DYNAMICS

被引：0

作者：

Cao, T. D. ^{[1
]}

Wang, Y. ^{[1
]}

Sanavia, L. ^{[2
]}

Schrefler, B. A. ^{[2
]}

机构：

[1] Tech Univ Darmstadt, Dept Mech Engn, Otto Berndt Str 2, D-64287 Darmstadt, Germany

[2] Univ Padua, Dipartimento Ingn Civile Edile & Ambientale, I-35131 Padua, Italy

来源：

PARTICLE-BASED METHODS IV-FUNDAMENTALS AND APPLICATIONS | 2015年

关键词：

Hydro-Thermo-Mechanical processes; FEM; Mixed elements; Multiphase materials; GENERAL CONSERVATION EQUATIONS;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

We present a mixed finite element formulation for the spatial discretization in dynamic analysis of non-isothermal variably saturated porous media using different order of approximating functions for solid displacements and fluid pressures/temperature. It is known in fact that there are limitations on the approximating functions N-u and N-p for displacements and pressures if the BabuskaBrezzi convergence conditions or their equivalent [5] are to be satisfied. Although this formulation complicates the numerical implementation compared to equal order interpolation, it provides competitive advantages e.g. in speed of computation, accuracy and convergence.

引用

页码：140 / 148

页数：9