Further developments in stress initialization in geomechanics via FEM and a two-step procedure involving Airy functions
Document typeConference report
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The in-situ stress field in rock masses is a key aspect when a numerical analysis of a rock mass is carried out in any area of geo-engineering, such as civil, mining, or Oil & Gas. A method for the numerical generation of the in-situ stress state in the FE context, based on Airy stress functions was previously introduced. It involves two steps: 1) an estimate of the stress state at each Gauss point is generated, and 2) global equilibrium is verified and re-balancing nodal forces are applied as needed. In this paper, new developments towards improving the accuracy of the stress proposal are discussed. A real application example has been used to illustrate the results achieved with the new implementation.
CitationRafels, C., Jaques, I., Aliguer, I., Carol, I., Prat, P., Lakshmikantha, R.M., Segura, J. Further developments in stress initialization in geomechanics via FEM and a two-step procedure involving Airy functions. A: International Conference on Computational Plasticity. "Computational Plasticity XIV: Fundamentals and Applications: proceedings of the XIVInternational Conference on Computational Plasticity: Fundamentals and Applications, held in Barcelona, Spain 5-7September 2017". 2017, p. 636-645.
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