Geodesic
Numerical simulation of dynamic channel-angular pressing of titanium specimens
Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika, no. 5 (2015), pp. 56-63

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At present, volume nanostructural and ultrafine-grained materials are considered as promising constructional and functional materials of new generation. Investigation of ultrafine-grained metals received by severe plastic deformation methods showed that they are characterized by a number of unique properties as compared to coarse-grained analogues: raised several times strength combined with good plasticity, low- and high-temperature superplasticity, cyclic and radiating resistance. Recently, a new method of severe plastic deformation was proposed — dynamic channel-angular pressing (DCAP), in which pressing of a specimen through channels is carried out by pulse loading at the expense of energy of compressed gases. In this work, deformation of a titanium specimen during DCAP was numerically investigated in a 3D statement for the dynamic scheme of loading. Computations have been carried out by the finite element method within the framework of the elastic-plastic medium model with allowance for fracture. The effective values of initial velocity and loading pressure are determined for a titanium specimen.
Keywords: dynamic channel-angular pressing, severe plastic deformation, numerical simulation. 
@article{VTGU_2015_5_a4,
     author = {A. S. Bodrov and N. V. Olimpieva and A. S. Zelepugin and S. A. Zelepugin},
     title = {Numerical simulation of dynamic channel-angular pressing of titanium specimens},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {56--63},
     publisher = {mathdoc},
     number = {5},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2015_5_a4/}
}
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A. S. Bodrov; N. V. Olimpieva; A. S. Zelepugin; S. A. Zelepugin. Numerical simulation of dynamic channel-angular pressing of titanium specimens. Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika, no. 5 (2015), pp. 56-63. http://geodesic.mathdoc.fr/item/VTGU_2015_5_a4/