Abstract
Earthquakes have been recognized as resulting from stick-slip frictional instabilities along the faults between deformable rocks. A three-dimensional finite-element code for modeling the nonlinear frictional contact behaviors between deformable bodies with the node-to-point contact element strategy has been developed and applied here to investigate the fault geometry influence on the nucleation and development process of the stick-slip instability along an intra-plate fault through a typical fault bend model, which has a pre-cut fault that is artificially bent by an angle of 5.6° at the fault center. The numerical results demonstrate that the geometry of the fault significantly affects nucleation, termination and restart of the stick-slip instability along the intra-plate fault, and all these instability phenomena can be well simulated using the current finite-element algorithm.
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Xing, H.L., Mora, P., Makinouchi, A. (2004). Finite Element Analysis of Fault Bend Influence on Stick-Slip Instability along an Intra-Plate Fault. In: Donnellan, A., Mora, P., Matsu’ura, M., Yin, Xc. (eds) Computational Earthquake Science Part I. Pageoph Topical Volumes. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-7873-9_18
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DOI: https://doi.org/10.1007/978-3-0348-7873-9_18
Publisher Name: Birkhäuser, Basel
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