Session IV:
Simulation of earthquake repture, wave propagation and standard models for different tectonic settings

2nd ACES (APEC Cooperation for Earthquake Simulation) Workshop in Japan



Finite Element Simulation on Frictional and Brittle Preseismic Fault Slip
Zhi-Shen Wu, Yun Gao, Yutaka Murakami


Abstract

In this paper, a finite element model for simulating crustal deformation including discontinuous slipping displacement along a fault is developed, where slip weakening behavior with a simple shear stress-relative displacement relationship on fault surface based on the concept of nonlinear fracture mechanics is taken into consideration. Throughout numerical simulations on fault-bend folding with a ramp, the contours and developments of the shear stress, the second stress invariant and the slip velocity varying with the values of fracture energy are investigated. Moreover, the breakdown process is discussed.

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