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oa Modeling of Stress-Strain State of Anisotropic Lithosphere Near the Earthquake Focus
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 18th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment, Apr 2025, Volume 2025, p.1 - 5
Abstract
With the purpose of studying the regularities of the stress-strain state in the vicinity of the earthquake focus, taking into account the anisotropy of the rigid rock’s properties of the lithosphere, we have carried out numerical modeling of the distribution of displacements and stresses in different directions. We have carried out the investigation on the basis of the variation finite element method for elastic multilayer orthotropic shells of rotation, taking into account shear compressibility. We have established that some general characteristic features of the stress-strain state can be obtained for the area of the elastic anisotropic lithosphere in the vicinity of the earthquake focus. We have shown that the distributions of displacements and stresses in the vicinity of the earthquake focus in different directions depend on the thickness of the sedimentary rock layer and the thickness of the crystalline basement rocks of the lithosphere, as well as on the distribution of the rigidity of different rocks in different directions. Changes in the rigidity of rocks in the shear direction have the greatest influence on the quantitative and qualitative changes in the distribution of displacements and stresses.