Тел.: 8(495)724-94-22

 8-903-724-94-22

Факс: 8(499)978-97-26

E-mail: Этот адрес электронной почты защищен от спам-ботов. У вас должен быть включен JavaScript для просмотра.

KSHP. OMD №5-2018

Category: Abstracts
Published on 20 July 2018
Written by kshp. omd Hits: 1095

Vorontsov A. L., Vlasov A. V.

Investigation of the reliability of the prediction by the finite element method of the main parameters of the plastic deformation process on the example of extrusion of a cylindrical glass.
Part 2. Calculation of forces and accumulated deformations

Specific features and results of calculations using the finite element method of power parameters and deformations in the extrusion of a cylindrical cup are described. Comparison of calculated values and experimental data is carried out and analyzed.
Keywords: finite element method; stress; deformation; plasticity; elasticity; extrusion stamping.

 

Schneiberg A. M., Ivanov S. V., Shirshkova M. A.

Evaluation of the effect of axial tool rotation on the force of combined volumetric stamping in an open die

Formulas for calculating the axial force for combined stamping of axisymmetric forgings are proposed. The analysis of existing formulas for estimating the effort of conventional stamping by other authors is made and their correction is given for the use in the case of combined punching.
Keywords: оpen stamping; axial force; combined deformation; «compression + torsion».

 

Agasyants G. A., Bolkisev S. A., Krylov S. V., Mikhailov E. P.

Progressive technologies and equipment for shaping and hardening of machine parts by rolling in thermomechanical processing schemes

The results of experimental work on the application of the processes of cold longitudinal rolling in idle rolls and hot closed radial-end rolling in the schemes of thermomechanical processing. The efficiency of the use of the developed processes for shaping and hardening of heavy loaded high-duty machine parts.
Keywords: responsible, highly loaded parts of machines; thermo-mechanical processing; cold lengthwise rolling in idle rolls; hot closed radial-end rolling; modes of processing; mechanical properties; properties under static and cyclic tests.

 

Strugov S. S., Ivanov V. A., Tarkalenko M. D.

Kinematic state of the workpiece in the process of undeviating hot volumetric stamping of collar flanges according to the combined «distribution-extrusion» scheme

The geometric parameters of the plastic deformation center for the general case of the stamping process are considered in the article. The kinematic state of the billet in the region of plastic deformation is considered. The expressions necessary for further study and making recommendations on the application of the process of unstable punching of collar flanges and similar forgings are obtained.

Keywords: undeviating stamping; stress-strain state; DEFORM-3D; collar flanges.

 

Gurskikh A. V.

Change in the structure of sintered aluminum bronze under compression

The influence of temperature on the structure modification of a single-phase Cu-15 % Al and two-phase Cu-24 % Al compositions on the compression of sintered bronze is studied. It is established that the sediment of samples from sintered alloys without destruction can reach 30 %. An increase in the pressing temperature results in a significant decrease in the working pressure, but a noticeable compaction of the material is observed only at temperatures above 500 ° C, when the deformation begins to distribute uniformly throughout the sample volume.
Keywords: hot pressing; intensive plastic deformation; aluminum bronze; sintered alloys.

 

Loginov Yu. N., Stepanov S. I., Khanykova E. V.

Influence of stress concentrators on stress-strain condition at compression of a cellular implant

The article analyzes the process of forging of a cellular titanium implant made of titanium alloy. The aim of this paper is to estimate the distribution of stresses and deformations in this type of test for a cellular material equipped with pores of square section. The compression load was modeled by the finite element method using the ABAQUS software suite. The distribution of the degree of deformation and the mean (hydrostatic) stress is calculated in two variants of calculation in the absence and presence of radii of the fillets of the cell profile. It is concluded that 3D printing of a material with cells in which the jumpers intersect at right angles is not permissible, which gives rise to a concentration of strains and stresses.

Keywords: plastic compression; titanium implant; cellular structure; finite element method; stresses; strains.