Download or read book Three dimensional Finite Element Cosserat Continuum Simulation of Layered Geomaterials written by Azadeh Riahi Dehkordi and published by . This book was released on 2008 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this research is to develop a robust, continuum-based approach for a three-dimensional, Finite Element Method (FEM) simulation of layered geomaterials. There are two main approaches to the numerical modeling of layered geomaterials; discrete or discontinuous techniques and an equivalent continuum concept.In the discontinuous methodology, joints are explicitly simulated. Naturally, discrete techniques provide a more accurate description of discontinuous materials. However, they are complex and necessitate care in modeling of the interface. Also, in many applications, the definition of the input model becomes impractical as the number of joints becomes large. In order to overcome the difficulties associated with discrete techniques, a continuum-based approach has become popular in some application areas. When using a continuum model, a discrete material is replaced by a homogenized continuous material, also known as an 'equivalent continuum'. This leads to a discretization that is independent of both the orientation and spacing of layer boundaries. However, if the layer thickness (i.e., internal length scale of the problem) is large, the classical continuum approach which neglects the effect of internal characteristic length can introduce large errors into the solution.In this research, a full 3D FEM formulation for the elasto-plastic modeling of layered geomaterials is proposed within the framework of Cosserat theory. The effect of the bending stiffness of the layers is incorporated in the matrix of elastic properties. Also, a multi-surface plasticity model, which allows for plastic deformation of both the interfaces between the layers and intact material, is introduced. The model is verified against analytical solutions, discrete numerical models, and experimental data. It is shown that the FEM Cosserat formulation can achieve the same level of accuracy as discontinuous models in predicting the displacements of a layered material with a periodic microstructure. Furthermore, the method is capable of reproducing the strength behaviour of materials with one or more sets of joints. Finally, due to the incorporation of layer thickness into the constitutive model, the FEM Cosserat formulation is capable of capturing complicated failure mechanisms such as the buckling of individual layers of material which occur in stratified media.
Download or read book 3D Finite Element Cosserat Continuum Simulation of Layered Geomaterials written by Azadeh R. Dehkordi and published by . This book was released on 2008 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 3D Finite Element Cosserat Continuum Simulation of Layered Geomaterials written by Azadeh R. Dehkordi and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Finite Element Method for Three Dimensional Thermomechanical Applications written by Guido Dhondt and published by John Wiley & Sons. This book was released on 2004 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. Displacements, strain, stress and energy -- 2. Linear mechanical applications -- 3. Geometric nonlinear effects -- 4. Hyperelastic materials -- 5. Infinitesimal strain plasticity -- 6. Finite strain elastoplasticity -- 7. Heat transfer.
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Download or read book Three dimensional Finite Element Model for Multilayered Ground water Reservoir of Long Island New York written by Sumant K. Gupta and published by . This book was released on 1978 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Finite Element Analysis of the Three dimensional Consolidation of Elastic plastic Layered Soil Using Discrete Fourier Series Expansion written by Kenneth Runesson and published by . This book was released on 1980 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Three Dimensional Finite Element Analysis of Soil Interaction with a Rigid Wheel written by Robert Charles Chiroux and published by . This book was released on 1997 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: