Prediction of fracture based on an assessment of "damage" of a metal by plastic deformation

Using the hypothesis of damage summation and the linear law the accumulation of such a method is proposed for predicting the fracture with large plastic deformation

Connection between machines durability during operation and the complex of physic-mechanical properties, formed during the production of critical parts

© Published under licence by IOP Publishing Ltd. The paper presents the effect of the processing technological structure on the hardening of metals and alloys by choosing the rational parameters of thermomechanical forming components at various stages of processing. The dependencies that can predict the destruction of the product during operation, depending on the structure oi the resulting metal fabrication are shown

Effect of hot and cold severe deformation by extrusion on the properties of lead and aluminum alloys

© 2015, Pleiades Publishing, Ltd. The study of the effect of severe plastic deformation (SPD) by extrusion shows that the ductility of lead after several cycles of SPD increases significantly (3–4 times) as compared to as-cast samples. An aluminum alloy after this processing is hardened by a factor of 2.3–2.5, with ductility decreasing by 2.5–2.7 times, as compared to the as-delivered state

Automated Generation of Rational Sheet Metal Forming Technology Variants at Process Engineering Stage

© 2017 The Authors. Published by Elsevier Ltd. The procedure of automated process reliability evaluation was developed in order to prevent recurrent defects in parts manufactured by die stamping. The procedure is based on the analysis of such factors as part design, material, its mechanical and physical properties; equipment parameters, tool performance, etc. The list of reliability factors may vary according to a type of operation as deformation process is different for each group of operations. The adjustment of stamping process reliability performance prevents any defects emerging during production of critical parts as early as the PPE stage. The automated control system for IE design at the PPE stage provides better part quality and lower production expenses thanks to IP reliability

Design and Manufacture of a Composite Punching Tool

© 2016, Allerton Press, Inc.Proposals are made regarding the design and manufacture of a composite rod-type hole-punching tool by plastic deformation

Automated Control System for the Assembly of a Composite Punching Tool

© 2016, Allerton Press, Inc.An automated system for simulation and control of the assembly of a composite hole-punching tool is developed. It consists of an information system used in preparations for assembly, with decision-making support on the basis of precedents; and modules for simulation and correction of the assembly process

Systems analysis of process control capabilities for forging accuracy

© 2017 Trans Tech Publications, Switzerland. The significance matrix for the parameters of “material-billet-equipment-process-toolpersonnel- environment” system was compiled using the systems approach to the assurance of forging dimensional accuracy, and the expert analysis revealed the most significant process parameters that affect the accuracy. The application of simulation modeling helped to establish the dependence of forging force on the dimensions of an incoming billet. The paper suggests a solution to increase the accuracy of the sized forgings

Automated design systems for manufacturing processes

© 2015, Allerton Press, Inc. A method of formalizing complex manufacturing processes on the basis of multilevel decomposition is proposed. In this approach, standard elements are identified at each level. Principles for formulating individual matrices and flexibly adjustable algorithmic matrices are outlined

Promising methods of SPD to obtain nanostructured metallic materials

© 2016, Institute of Problems of Mechanical Engineering.The manuscript provides the results of investigations and the analysis of advanced schemes of severe plastic deformation (SPD) creating conditions of non-monotonic exposure at drawing and rolling of long-length metallic materials. The manuscript shows the efficiency of schemes in terms of nanostructured states processing and the advance of further studies for possible commercial implementation

Prediction of samples failure during severe plastic deformation by multiple extrusion

© Published under licence by IOP Publishing Ltd. A method of obtaining a hardened semi-intensive plastic deformation by extrusion is considered. The results of simulation process at different stages of extrusion are given. Conclusions are drawn about the applicability of the simulation results to obtain the axisymmetric products. The results of sample study are given according to the method of determining the criterion of damage Ψ