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| Modelling lithospheric deformation | ||||||||||
| ELLIPSIS Examples: Strain localization - Strain weakening is achieved by multiplying the yield stress by a weakening factor power-law function of the accumulated strain ε. Below an strain treshold (ε0) the strain weakening function is: |
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| above the strain treshold (ε0) the weakening function is constant and equal to Ea. | ||||||||||
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| The experiment on the right illustrates the strain localization function in Ellipsis. This experiment shows the plastic deformation in map view of a region impinged upon by a rigid indenter. Lateral escape, along a zone of intense strain localization, of a portion of the deformable region accommodates the convergence. The figure futher to the right shows different models using different values for En and ε0. |
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