KSHP. OMD №11-2016

Stebunov S. A.

25 years of the program for simulation of forming processes QForm

The article describes the main stages of formation and development of the ltd «QuantorForm». The most famous steps of the company and their contribution to the development of the metallurgy and engineering industries are shown.
Keywords: history; QForm; metallurgy.

Vlasov A.V., Stebunov S.A.

Calculation of fatigue durability of dies at hot die forging

The new method for calculating of life cycle fatigue for dies at hot forging is presented. The method is implemented as a subroutine for QForm software and designed for estimating of the durability of die tools. Testing results are provided for QForm simulation and compared with laboratory testing data. A brief overview of existing methods for prediction of fatigue failure of dies is also presented.
Keywords: life cycle fatigue of dies; fatigue failure; hot forging; calculation method; simulation; QForm.

Potapov A.V., Maystrov Yu.V.

Research of impact technological parameters at hydroforming tee fitting

The impact of process parameters on the effect of shaping at hydroforming tee fitting by simulation in QForm V8 was analyzed, regression analysis was obtained mathematical model the impact of process parameters on the minimum thickness of material, assessment of the adequacy of the results carried out.
Keywords: hydroforming; tee fitting; QForm; minimum thickness of material.

Bylya O.I., Blackwell P.L., Vasin R.A., Sarangi M.K.

Modelling of the Transformation of Coarse Grained Microstructure of a+b Titanium Alloys Along with FEM Simulation of Hot Forming Processes

It is well known that fine grained titanium alloys are characterized by very promising properties, but the process of obtaining such materials is normally quite costly and time consuming. To reduce the cost of manufacturing an attempt can be made to refine the initial coarse grained microstructure directly in the process of hot working. Various experiments conducted by the authors as well as work carried out by other researchers indicate that this is possible. The main complexity in the implementation of this idea into real technological processes is related to the high non-uniformity of the strains, strain rates and temperatures in the deformed workpiece and the sensitivity of microstructural transformation to these parameters. To approach this problem the capability of modelling the microstructure transformation along with the finite element (FEM) simulation of the deformation process is required. In this work a simple constitutive model coupled with the microstructure transformation is programmed into the FEM software, QForm, and used to investigate the perspectives of hot forging of the coarse grained two-phase titanium alloy.
Keywords: superplasticity; complex loading; a+b Ti alloys; constitutive modeling; FEM simulation; QForm.

Vlasov A.V.

Simulation of thermal processes during metal forming with using of QForm software by finite volume method

The heat transfer process is modeling using the QForm software by a finite volume method. The finite volume mesh is based on a finite element mesh used for the deformation problem solving by the Voronoi Cell finite element formulation. Allowing the resolving equation system is based on a heat balance into each finite volume. It has shown clearly that the proposed method allows obtaining more stable calculation results for temperature fields compared with the finite elements method.
Keywords: QForm; heat transfer equation; finite volume method; Voronoi Cells; finite element method.

Danilin V.N., Danilin A.V.

Study of metal flow of the billet in the container and matrix channel during different methods of pressing from difficult-to-deform aluminium alloys by means of mathematical modeling in QForm

The paper presents new research techniques of the metal flow rate at extrusion on the basis of mathematical modeling results in the QForm software and industrial experiments. Possibilities of efficient control over the metal flow into the container and channel of the matrix are described. Recommendations concerning using of different pressing modes, non-standard equipment, and tools for implementation of various technological purposes are provided.
Keywords: extrusion; simulation; mathematical model; QForm; difficult-to-form aluminum alloys.

Ovchinnikov A.V., Beglaryan A.A., Avtonomova E.A.

Analysis of the possibility of a non-discharge drum forgings during hot bulk forming from alloy AD33

Computer analysis of the unfilled zones of the die due to pressed gas are shown in the article. Based on the information about dynamic surface filling of the die was detected the character of pressure increasing and impact on the metal flow. The simulation was performed using QForm software 5 and 7 versions for hydraulic press forging of the AD33 aluminium cylinder. It was determined that the gas pressure in the closed zones of the die can prevent of the filling.
Keywords: QForm; simulation; finite element method; technological process; forging; gas pressure; hydraulic press.

Pankratov D.L., Shenogin V.P., Tepin N.V., Shulyat'ev M.I., Novokreshchenov A.N.

Obtaining of workpieces with the improved mechanical characteristics during plastic deformation

The article considers the methods for producing workpieces with improved mechanical characteristics through plastic deformation. The proposed new method of producing hardened sheet material workpieces, comprising alternating bending deformation in the longitudinal and straightening obtained corrugations.
Keywords: hardening; deformation; molding-straightening; sheet metal workpiece.

Shenogin V. P., Tepin N. In. Khrabrov, V. A., Zhuravlev O. G.

features of development of production technology of roll-formed corrugated sections

The article considers the questions connected with definition of parameters of technological process of roll forming the roof panel, and a parameter optimization tool to improve the quality of profiles.
Keywords: forming roof panel; design; roll forming; stand.

Gladkov, Y. A., Kanevskiy S. S.

Simulation of extrusion of aluminum profiles in the new version of the program QForm Extrusion VX: joint deformation task

The paper presents a review of the new version of QForm Extrusion VX software with an emphasis on the importance of coupled mechanical simulation for profile extrusion processes. The simulation is based on a Lagrange-Euler approach where elastic-plastic deformation of the die influences the material flow and vice versa. New features of the software such as the ability to apply User Defined Functions (UDF), transversal and longitudinal welding seams position prediction and a new modern interface are considered in the paper.
Keywords: QForm Extrusion; simulation; aluminium extrusion; extrusion die set design; benchmark; coupled simulation.