http://hdl.handle.net/2160/2918 Wed, 22 May 2013 21:25:02 GMT 2013-05-22T21:25:02Z http://hdl.handle.net/2160/13018 Flow of viscoplastic materials through converging channels Lyamina, E.; Mishuris, Gennady; Alexandrov, S. Many classical rigid perfectly/plastic solutions cannot be extended to more complicated rigid plastic materials, such as rigid plastic hardening materials and rigid viscoplastic materials. The present paper reveals sources of this difficulty in the case of flow of rigid viscoplastic material through infinite converging rough wedge-shaped and axisymmetric channels. Two types of viscoplastic models without strain hardening are considered, with and with no saturation stress. The maximum friction law is adopted at the friction surface. Qualitative features of the solutions are compared to those occurring in compression of a rigid plastic layer between rough, parallel plates Alexandrov, S; Lyamina, E; Mishuris, G. Flow of viscoplastic materials through converging channels. Special Issue: Sixth International Congress on Industrial Applied Mathematics (ICIAM07) and GAMM Annual Meeting, Zürich 2007, PAMM, 2008, 7(1), 1060603 - 1060604 Mon, 01 Dec 2008 00:00:00 GMT http://hdl.handle.net/2160/13018 2008-12-01T00:00:00Z http://hdl.handle.net/2160/13017 Exact solution to a refined contact problem for biphasic cartilage layers Argatov, Ivan; Mishuris, Gennady Nithiarasu, P; Lohner, R; van Loon, R We revisit the axisymmetric contact problem for a biphasic cartilage layer and consider a refined formulation taking into account the both normal and tangential displacements at the contact interface. The obtained analytical solution is valid for arbitrary time and increasing loading conditions. We compare it with the classic result and indicate cases where the difference could be pronounced. Mishuris, G; Argatov I. Exact solution to a refined contact problem for biphasic cartilage layers. In proceedings of First International Conference on Computational and Mathematical Biomedical Engineering (CMBE09), Eds. P. Nithiarasu, R. Lohner, R. van Loon, ISBN:978-0-9562914-0-0 Swansea, Swansea, June 2009, pages 151 - 154. Mon, 01 Jun 2009 00:00:00 GMT http://hdl.handle.net/2160/13017 2009-06-01T00:00:00Z http://hdl.handle.net/2160/12936 Delamination of a bi-material strip by a steady-state interfacial crack Mishuris, Gennady; Movchan, N. V. Steady-state moving Mode-III infinite interfacial crack along the perfect interface in a dissimilar strip is investigated. The crack position is not generally speaking symmetrical with respect to the strip surfaces. Both Dirichlet and Neumann external boundary conditions are considered. Asymptotic behaviour of the solution is analysis with a special emphasis to the value of stress intensity factor as function of the crack velocity and material and geometrical properties. Movchan, N; Mishuris, G. Delamination of a bi-material strip by a steady-state interfacial crack. Eds: D. Jeulin, S. Forest. Proceedings of the International Symposium CMDS11. 2008, 231-242 Tue, 01 Jan 2008 00:00:00 GMT http://hdl.handle.net/2160/12936 2008-01-01T00:00:00Z http://hdl.handle.net/2160/12935 Solution asymptotics near meximum friction surfaces in the plane strain b lock compression : various viscoplastic laws with saturation stress. Mishuris, G.; Alexandrov, A.; Miszuris, W. Jeulin, Dominique; Frost, Samuel Tue, 01 Jan 2008 00:00:00 GMT http://hdl.handle.net/2160/12935 2008-01-01T00:00:00Z