Download IUTAM Symposium on Theoretical and Numerical Methods in by R. de Boer (auth.), Wolfgang Ehlers (eds.) PDF
By R. de Boer (auth.), Wolfgang Ehlers (eds.)
During the final a long time, continuum mechanics of porous fabrics has accomplished nice awareness, because it enables the honor of the volumetrically coupled behaviour of the forged matrix deformation and the pore-fluid move. certainly, purposes of porous media versions diversity from civil and environmental engineering, the place, e. g. , geote- nical difficulties just like the consolidation challenge are of serious curiosity, through mechanical engineering, the place, e. g. , the outline of sinter fabrics or polymeric and metal foams is a customary challenge, to chemical and biomechanical engineering, the place, e. g. , the advanced constitution of l- ing tissues is studied. even supposing those functions are largely very varied, they essentially fall into the class of multiphase fabrics, that are defined, at the macroscale, in the framework of the well-founded thought of Porous Media (TPM). With the expanding strength of machine including the quickly reducing computational bills, numerical recommendations of complicated coupled difficulties turned attainable and feature been heavily investigated. even though, because the caliber of the numerical options strongly relies on the standard of the underlying actual version including the experimental and mathematical chances to effectively make certain sensible fabric parameters, a profitable therapy of porous fabrics calls for a joint attention of continuum mechanics, experimental mechanics and numerical tools. furthermore, micromechanical - vestigations and homogenization suggestions are very valuable to extend the phenomenological knowing of such media.
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Extra resources for IUTAM Symposium on Theoretical and Numerical Methods in Continuum Mechanics of Porous Materials: Proceedings of the IUTAM Symposium held at the University of Stuttgart, Germany, September 5–10, 1999
Sample text
3. Examples for a particular constitutive model The above equations are now evaluated numerically for different cases of the Pastor Zienkiewicz model for sand. This model is strongly parameter and stress history dependent. The used parameters are taken from Pastor et al. [10]. The initial stresses for Pastor-Zienkiewicz model and Only loading process is considered in this paper. During this process the following loading conditions are assumed: where is the loading factor. The results at bifurcation and localisation points are shown in Tables 1 and 2, respectively without consideration of fluid phase and with the effect of the liquid at undrained conditions.
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