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Elasto-visco-plastic matrix reinforced by elastic short fibers (left). Equivalent strain during traction along x1 axis (right).

Elastic plastic matrix reinforced by elastic fibers. Equivalent strain and stress/strain curve during traction along x axis

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Elastic plastic material with 3 populations of spherical voids. a: microstructure. Equivalent strain-rate field for axisymmetric loading (b) and pure shear loading(c).

For more details, see: "Effective flow surface of porous materials with two populations of voids under internal pressure: II. Full-field simulations" Vincent P-G, Suquet P, Monerie Y, Moulinec H, doi:10.1016/j.ijplas.2013.11.012