000015495 001__ 15495
000015495 005__ 20161115100223.0
000015495 04107 $$aeng
000015495 046__ $$k2016-08-21
000015495 100__ $$aPolyzois, Ioannis
000015495 24500 $$aSimulating the microstructural failure mechanism of shear bands in steel

000015495 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000015495 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000015495 506__ $$arestricted
000015495 520__ $$2eng$$aHigh strain rate plastic deformation of metals results in the formation of localized zones of severe shear strain known as adiabatic shear bands (ASBs), which are a precursor to shear failure. The formation of ASBs in AISI 4340 steel was examined experimentally and through simulations. Testing parameters included heat treatment temperatures, testing temperature, and impact momentum using the Direct Impact Hopkinson Pressure Bar (DIHPB). Using experimental stress strain response data, a two dimensional axi-symmetric simulation model was developed in Matlab and explicit FEA software LSDYNA to simulate ASB formation in AISI 4340 steel. The model uses the Voronoi tessellation to generate the prior austenite grain structure of the steel, and also generates geometry for the martensite sub-grain lath blocks and a grain boundary geometry representative of the cross section of the specimens. The model was discretized using a meshless Lagrangian formulation. Simulation results closely matched experimental findings.

000015495 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015495 653__ $$a

000015495 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000015495 720__ $$aPolyzois, Ioannis
000015495 8560_ $$ffischerc@itam.cas.cz
000015495 8564_ $$s176341$$uhttps://invenio.itam.cas.cz/record/15495/files/TS.SM15-6.02.pdf$$yOriginal version of the author's contribution as presented on CD,  page 2911, code TS.SM15-6.02
.
000015495 962__ $$r13812
000015495 980__ $$aPAPER