Nonlinear and nonequilibrium dynamics in geomaterials.

  title={Nonlinear and nonequilibrium dynamics in geomaterials.},
  author={James Alan Tencate and Donatella Pasqualini and Salman Habib and Katrin Heitmann and David M. Higdon and Paul Allan Johnson},
  journal={Physical review letters},
  volume={93 6},
The transition from linear to nonlinear dynamical elasticity in rocks is of considerable interest in seismic wave propagation as well as in understanding the basic dynamical processes in consolidated granular materials. We have carried out a careful experimental investigation of this transition for Berea and Fontainebleau sandstones. Below a well-characterized strain, the materials behave linearly, transitioning beyond that point to a nonlinear behavior which can be accurately captured by a… 

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