Shakedown of unbound granular material

Details Shakedown of unbound granular material Shakedown of unbound granular material

2004-04-07

arxiv.org/abs/cond-mat/0404176v2

Physics

Condensed Matter

Materials Science

Scientific paper

Compacted unbound granular materials are extensively used as sub-layer in pavement design. Most pavement design guides assume that they are responsible for the degradation and deformation of the roads and railways that they support. Biaxial tests are usually employed to investigate the elasto-plastic response of these materials to cyclic loading. A particularly interesting question is whether a limit load exists, below which the excitations shake down, in the sense that the material does not accumulate further deformations. We have carried out a detailed study of the elasto-plastic behavior of a simple model of unbound granular matter submitted to cyclic loading. The dissipated energy through out the simulation has been used for the characterization of the different regimes of responses.

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