A novel framework for elastoplastic behaviour of anisotropic solids
| Autor: | Zhou Lei, Antonio Munjiza, Bryan Euser, Christopher R. Bradley, Esteban Rougier |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics Numerical Analysis Constitutive equation 0211 other engineering and technologies Computational Mechanics 02 engineering and technology Function (mathematics) Mechanics 01 natural sciences Strain energy 010101 applied mathematics Computational Mathematics Nonlinear system Modeling and Simulation Hyperelastic material 0101 mathematics Anisotropy Scalar field 021101 geological & geomatics engineering Civil and Structural Engineering Test data |
| Zdroj: | Computational Particle Mechanics. 7:823-838 |
| ISSN: | 2196-4386 2196-4378 |
| DOI: | 10.1007/s40571-020-00345-2 |
| Popis: | A general framework for developing nonlinear hyperelastic/plastic constitutive laws for anisotropic solids experiencing large strains and strain rates has been developed. The proposed framework does not rely on the “a priori” known strain energy function, but instead introduces a physical decomposition of the material element into seven physically independent stress bearing mechanisms, each of which has a constitutive law in terms of internal moments described by a scalar function of a single variable. The model has been encoded into a combined finite-discrete element method and tested against static geomechanical test data. The numerical validation experiments show the model can reproduce plastic anisotropic behaviour in both biaxial and uniaxial loading of a geomaterial. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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