Controls on Post?Seismic Landslide Behavior in Brittle Rocks

Controls on shallow landslide size

Most distributed slope-stability models for shallow landslide prediction neglect the forces acting on the sidewalls of landslide scars. Back-calculations and field observations, however, show that lateral root strength is a primary control on size and location of shallow landslides in soil mantled hillslopes. Here we report a theory that estimates landslide width, assuming that root strength ac...

Creep: Time‐dependent brittle deformation in rocks

Brittle creep, damage and time-to-failure in rocks

We propose a numerical model based on static fatigue laws in order to model the time-dependent damage and deformation of rocks under creep. An empirical relation between time-to-failure and applied stress is used to simulate the behavior of each element of our finite element model. We first review available data on creep experiments, in order to study how the material properties and the loading...

A micromechanics-based elastoplastic damage model for quasi-brittle rocks

This paper presents a micromechanics-based elastoplastic damage model for quasi-brittle rocks in compression stress state. The plastic strain is considered to be related to frictional sliding along microcracks and inherently coupled with damage evolution. By following a homogenization procedure, we first determine the free energy for the matrix-cracks system. The thermodynamic force associated ...

Brittle fracture during folding of rocks: A finite element study

Brittle fracture during folding of rocks: A finite element study P. Jäger a; S. M. Schmalholz b; D. W. Schmid c; E. Kuhl d a Department of Mechanical Engineering, University of Kaiserslautern, Kaiserslautern, Germany b Geological Institute, Zürich, Switzerland c Physics of Geological Processes, University of Oslo, 0316 Oslo, Norway d Department of Mechanical Engineering, Stanford University, St...