On the basis of energy approach it is reported a development yield function and constitutive equations for orthotropic material with consideration crystal lattice constants parameters crystallographic texture general stress state. For practical use in sheet metal forming analysis considered different loading scenarios: plane strain states. Using proposed function, influence single ideal components on shape surface was analyzed. The six investigated here were cube, Goss, copper, brass, S...

The article represents the theoretical basis for generation of virtual material models with given crystallographic orientation (CGO) structure in metals and alloys cubic crystal lattice. obtained functional interrelations allow to take into consideration a metal sheet CGO technological calculations forming processes and, most significantly, priori by means determine meeting requirements increasing materials formability product performance. It is an example implementation calculated while...

This paper examines the effect of yield criterion matrix on brittle fracture fibre in continuous reinforced metal composites subjected to tension direction parallel fibres. It is assumed that obeys quite a general isotropic criterion. An approximate approach predicting tensile load at which breaks previously proposed literature adopted. shown this practically independent matrix. great advantage for engineering applications since an analytic solution available case Tresca can be used wide...

This paper presents a method for acquiring true stress–strain curves using engineering strain obtained from upset forging of cylindrical specimens. The main problem deals with determination the in hot on hummers when values rates are differ range 0 to 10 -3 s. At such due wave processes distribution specimen will be uneven. purpose this publication is analytically determine compressed specimen.

Plastic anisotropy is one of the multiple material representations significantly affecting springback simulations. The present paper studies influence plastic over in plane strain pure bending by means exact semi-analytical solution. yield criterion and constitutive equations for orthotropic with consideration crystal lattice constants parameters crystallographic texture are used taking into account anisotropy.

We consider a concept of databases for the numerical and physical experiments in information management system used new materials development. For this purpose, brief analysis systems large-scale has been performed. Special features general approach to templates functional requirements are suggested.

The paper presents the software and data transfer method between ProCAST Deform-3D, which allow to take into account geometry, temperature, residual stresses microstructure of semi-finished product in “casting – forming” processes.

The study addresses the effect of thermal treatment on mechanical properties and grain size magnesium rich alloys with small scandium additions 1570, 1580 1590. preheat temperature (within 260440 С range) soaking time 2 100 hours yield strength, tensile strength relative elongation under investigation was analyzed. Mechanical were determined using uniaxial tests in accordance ISO 6892-1. In addition, for some modes microstructure studied Al3Mg2 -phase presence distribution by optical...

This paper addresses the study of complex effect alloying elements (magnesium, manganese, copper and zirconium) on changes in magnesium-rich aluminum alloy composition, fine coarse particle size number, recrystallization characteristics mechanical properties. The data obtained made it possible to analyze change chemical sizes intermetallic compounds dispersoids depending content. composition driving force number nuclei was studied. It established that addition leads grain refinement,...

The finite element simulation was used to analyze the effect of crystallographic texture on material formability in typical sheet metal forming processes: stretch forming, hole expansion, drawing and bending. It is defined that best (maximum cupping depth, flanging ratio, minimum bending radius) provided by a rotated cube orientation; worst – Goss orientation. Some components provide better than isotropic case (rotated cube), some - worse (cube, goss) or close isotropy (copper, brass S-orientation).

This paper deals with the pure bending of incompressible elastic perfectly plastic two-layer sheets under plane strain conditions at large strains. Each layer is classified by its yield stress, shear modulus elasticity and initial percentage thickness in relation to whole sheet. The solution found semi-analytic. In particular, a numerical technique only necessary solve transcendental equations. general cumbersome because different analytic expressions for radial circumferential stresses...

We have simulated an aluminum workpiece tool bending process with and without consideration of the heat affected zone after laser cutting PAM-STAMP 2G. To describe we used a customized software option for calculating welded materials dissimilar ones. also provided analysis stress-strain state different scale mechanical properties material on its “edge” in center workpiece.

The combined Coulomb constant shear friction law is widely used in commercial and research software for the finite-element analysis (FEA) of metalworking naturally more flexible hence, relevant to real-life manufacturing than individual laws. In this work, a new mathematical model coefficients extruding metal through narrow V-shaped channels with small convergence angles has been developed evaluated compared laboratory measurements. extrusion material (lead) varying from 0 3.5 degrees...

Работа посвящена исследованию влияния комплексного легирования алюминиевых сплавов магнием, марганцем, скандием, цирконием и гафнием. С этой целью в стальной кокиль были отлиты слитки А85, а также сплавы систем Al–Mg, Al–Mg–Sc, Al–Mg–Mn–Sc сплав 1570 том числе с добавками гафния 0,5 %. У всех изучена зёренная структура, интерметаллидные включения механические свойства. Для 1570–0,5Hf дополнительно на просвечивающем электронном микроскопе изучались наночастицы типа Al3(ПЭ1x, ПЭ2(1-х)). Анализ...