Finite-Element Model of Bimetal Billet Strain Obtaining Box-Shaped Parts by Means of Drawing

Haikova, Tetiana; Puzyr, Ruslan; Dragobetsky, Vladimir; Symonova, Anastasiia; Vakylenko, Roman

doi:10.1007/978-3-030-22365-6_9

Cited by 19 publications

(3 citation statements)

References 20 publications

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“…In [14], the problem of determining the optimal thickness ratio of elements of layered materials under the shockwave action of bullets is solved. The results of ballistic tests are also given.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

A search for technologies implementing a high fighting efficiency of the multilayered elements of military equipment

Zagirnyak

Moloshtan

et al. 2019

EEJET

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Розроблено технології отримання сферичних днищ та циліндричних обичайок в багатошаровому виконанні з квазишарового матеріалу та ущільнення багатошарової стінки елементів військової техніки. Необхідність цих досліджень пов'язана з підвищенням живучості та усуненню осколочної дії на живу силу й техніку, конструкцій в багатошаровому виконанні, в яких використовуються судини високого тиску (підводні човни, судини для вогнеметів, елементи для бронетехніки). Представлені експлуатаційні умови, в яких найбільш ефективно використовувати конструкції, що виготовлені із шаруватих конструкційних матеріалів. Описано їх переваги в умовах експлуатації та виробництва. Найбільш повна реалізація ефективності досягається при щільному приляганні шарів конструкції або при використанні квазішаруватих матеріалів. Вирішення цього завдання можливе при використанні енергії бризантних вибухових речовин. Експериментально встановлено, що вибухове навантаження призводить до збільшення ударної в'язкості та балістичної стійкості оброблюваних матеріалів. Проведено аналіз різних варіантів способів ущільнення багатошарової стінки та запропоновано найбільш ефективні технології. В результаті досліджень встановлені технологічні параметри процесів, вимоги до технологічного обладнання та оснащення. Важливість представлених досліджень пов'язана з підвищенням боєздатності, живучості військової техніки та особового складу Ключові слова: зварювання вибухом, ущільнення багатошарової стінки, композиційні матеріали, квазішаруваті матеріали, бронетехніка

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

A search for technologies implementing a high fighting efficiency of the multilayered elements of military equipment

Zagirnyak

Moloshtan

et al. 2019

EEJET

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“…It is possible to partially automate the debugging process with the involvement of applied programs for the finite-element modeling of technological processes [10,11]. However, even here the accuracy of modeling depends on the skills and experience in the program of an engineering worker and does not exclude physical modeling, but only directs it in the right direction [12,13]. In this regard, the issue of refining the existing universal computational technological dependences that could reduce the time of debugging equipment is acute.…”

Section: Introductionmentioning

confidence: 99%

Improving the technology for manufacturing hollow cylindrical parts for vehicles by refining technological estimation dependences

Puzyr

Shchetynin

Vorobyov

et al. 2021

EEJET

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This paper shows that the technological preparation of production accounts for 20‒70 % of the total labor intensity of technical preparation. An important role belongs to the applied programs of finite-element modeling. However, such software packages often cannot be purchased by small-scale industrial enterprises for various reasons. Therefore, special empirical and analytical calculation models are used, which have proved to be quite effective in typical metal processing processes. Drawing a cylindrical hollow part was used as an example of the improved analytical dependence to calculate meridional tensile stresses. Existing analytical models of the process accounted for the bending moment through additional stresses. However, this approach only roughly described the deformation process. It was possible to refine the existing analytical dependences by introducing a term into the differential equilibrium equations that takes into consideration the bending moment that acts in the meridional direction when a workpiece passes the rounding on the matrix edge. Analysis of the obtained expression revealed that the bending of a workpiece gives rise to the stretching meridional stresses, which depend on the ratio of the squares of the thickness of the workpiece and the radius of the matrix rounding. The results of the estimation data from the numerical and theoretical models coincided for small values of the radius of the matrix rounding of 1‒2 mm, which confirms the adequacy of the analytical solution. In the numerical model, there is an extreme point where the tensile stresses have a minimum and, after it, begin to increase; this corresponds to the matrix rounding radius of 5 mm

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“…In largescale production, rather productive drawing methods are mainly used, such as drawing with pressing the flange, with pulling ribs and sills, drawing on sheet stamping machines, drawing out from a tape, drawing out with thinning the wall, etc. [1][2][3]. In the medium and small batch production, the above methods are used.…”

Section: Introductionmentioning

confidence: 99%

The assessment of the process of drawing a cylindrical workpiece without pressing with alternating strain of the workpiece flange

et al. 2021

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The development of a method for drawing cylindrical parts without pressing the workpiece flange, which allows reducing the cost of production due to the use of dies without a fit ring and single-acting presses. The performed research revealed that this method results in obtaining cylindrical parts with drawing ratios typical for pressing drawing. In this case, the different thickness of the finished product is several times less compared with the same type of semi-finished products obtained by drawing with a fit ring. Steel, aluminum and copper workpieces were researched. The best results were shown by more plastic materials. This method is not applicable for materials with the less than 0.25 mm thickness.

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Finite-Element Model of Bimetal Billet Strain Obtaining Box-Shaped Parts by Means of Drawing

Cited by 19 publications

References 20 publications

A search for technologies implementing a high fighting efficiency of the multilayered elements of military equipment

A search for technologies implementing a high fighting efficiency of the multilayered elements of military equipment

Improving the technology for manufacturing hollow cylindrical parts for vehicles by refining technological estimation dependences

The assessment of the process of drawing a cylindrical workpiece without pressing with alternating strain of the workpiece flange

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