Soil Failure.pptx - SOIL FAILURE SOIL FAILURE • During...

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SOIL FAILURE During tillage operations the desired intent is to bring the soil to failure and the behavior of the soil in this phase of loading is of particular interest. When discussing failure and yield, it is customary in plasticity theory to have recourse to surfaces in principal stress space. This may appear to be an attractive approach in that it has similarities to the critical state model in state space.
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SOIL FAILURE Nevertheless, unlike p-q-v-space, it is difficult to attribute physical meaning to -space and hence the discussion on failure will be carried out in the context of the stress-strain behavior of soils. It is relatively easy to relate such characteristics with observable behavior during simple compression testing. Four basic forms of soil failure commonly observed will be dealt with next.
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PLASTIC FLOW This type of failure takes place with large plastic deformations and there is little or no separation of the soil mass.
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