Efficient and realistic 3-D boundary element simulations of underground construction using isogeometric analysis
| Autor: | Christian Duenser, Vincenzo Mallardo, Gernot Beer |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Rock bolt
Computer science 0211 other engineering and technologies Geomechanics Mechanical engineering BEM Isogeometric analysis Geomechanics Inclusions Elasto-plasticity 02 engineering and technology Isogeometric analysis Degrees of freedom (mechanics) 010502 geochemistry & geophysics 01 natural sciences NO Complex geometry FOS: Mathematics Elasto-plasticity PE8_4 Mathematics - Numerical Analysis PE8_3 Boundary element method 021101 geological & geomatics engineering 0105 earth and related environmental sciences BEM Numerical analysis Numerical Analysis (math.NA) Geotechnical Engineering and Engineering Geology Computer Science Applications Mesh generation Inclusions |
| Zdroj: | Computers and Geotechnics. 134:104055 |
| ISSN: | 0266-352X |
| DOI: | 10.1016/j.compgeo.2021.104055 |
| Popis: | The paper outlines some recent developments of the boundary element method (BEM) that makes it more user friendly and suitable for a realistic simulation in geomechanics, especially for underground excavations and tunnelling. The innovations refer to the introduction of isogeometric concepts, elasto-plastic analysis and the simulation of ground support. The introduction of isogeometric concepts for the description of the excavation boundaries results in less user and analysis effort, since complex geometries can be modelled with few parameters and degrees of freedom. No mesh generation is necessary. In order to consider heterogeneous and inelastic ground conditions a domain discretisation is used but the use of isogeometric methods results in a minimum of user effort. Efficient methods are also presented for modelling rock bolts. A comparison of results of test examples with other numerical methods and analytical solutions confirm the efficiency and accuracy of the proposed implementation. A practical example with a complex geometry is presented. 33 pages, 25 figures. arXiv admin note: text overlap with arXiv:2003.10217 |
| Databáze: | OpenAIRE |
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