NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
The 64th Japan National Congress for Theoretical and Applied
Session ID : OS3-02-06
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OS3-2
Simulation of Riedel shear bands formation considering the jog on strike-slip fault based on nonlinear geomechanics
Tomohiro TOYODAToshihiro NODAShotaro YAMADAShota YAMADAAkira ASAOKA
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Abstract

A slip on strike-slip fault causes flower structures and Riedel shear bands within the overlying cover. In our former research, the Riedel shear bands formation process was simulated considering the material imperfection in ground by utilizing the three-dimensional elasto-plastic finite deformation analysis code GEOASIA. On the other hand, it’s known that the existence of jog (geometrical barrier) has an important role on the formation process. This paper simulates a strike-slip faulting process considering jog as a geometrical imperfection in ground on the strike-slip fault. As a result, the formation processes unique to subsidiary fault such as fractal shear bands, P-shear, low and high angle shears appeared.

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© 2017 The Japan Society of Mechanical Engineers
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