Готові списки джерел за темами / Deforming drawing

Добірка наукової літератури з теми "Deforming drawing"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Deforming drawing"

Rutkevych, Volodymyr, and Vitaliy Kushnir. "CALCULATION ON THE STRENGTH OF DEFORMING ELEMENTS AND DEVELOPMENT OF FIRMWARE STRUCTURES FOR ULTRASOUND PROCESSING." Vibrations in engineering and technology, no. 2(101) (June 29, 2021): 135–44. http://dx.doi.org/10.37128/2306-8744-2021-2-15.

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The possibility of increasing the efficiency and expanding the technological capabilities of the process of deforming drawing, by studying the contact phenomena and force characteristics of the process of deforming drawing (flashing) with the imposition of ultrasonic vibrations on the tool. The main advantages of deforming drawing with application of ultrasound are noted, among which it is necessary to allocate considerable decrease in force parameters of process, reduction of level of residual stresses, increase of accuracy of the processed details. Also, the application of ultrasound allows you to process parts made of metal and alloys, the processing of which in normal conditions is impossible and requires special techniques. It is noted that it is not possible to use known designs of broaches and firmware when flashing with the application of ultrasonic vibrations, because the firmware must have all the dimensions related to the acoustic parameters and the deforming element must be placed on the mandrel with tension to create good acoustic contact between the mandrel and the element. Prefabricated deforming firmware for processing holes with the imposition of longitudinal ultrasonic vibrations has been developed and a method for calculating their deforming elements for strength has been proposed. The performed calculations showed that the calculated stresses differ from the allowable ones by no more than 15-20 %. From the above calculations it is seen that the deforming element can be destroyed, both under the action of the working load in the process of flashing, and under the action of thermal stresses after the exit of the element from the machined hole. This difference in the results of research can be explained by the fact that the order of tensile strength is a value that has a large scattering zone and in different studies it is different. The results of research on the strength of deforming elements can be used in engineering calculations in the design of prefabricated tools for drawing holes with ultrasound.

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Buylov, A. E. "Analysis of microstructure of surface layer of a hole while deforming drawing in lubricants." Izvestiya MGTU MAMI 7, no. 1-2 (March 10, 2013): 20–22. http://dx.doi.org/10.17816/2074-0530-67971.

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Shchedrin, A. V., A. A. Bekaev, and G. K. Sumele. "Interaction of spherical deforming element and cylindrical blank in hybrid drawing." Russian Engineering Research 30, no. 12 (December 2010): 1238–40. http://dx.doi.org/10.3103/s1068798x10120130.

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Galkin, V. I., A. R. Paltievich, and E. V. Galkin. "Specifics of joint deformation of fibered composite and homogeneouos materials." MATEC Web of Conferences 329 (2020): 02022. http://dx.doi.org/10.1051/matecconf/202032902022.

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The article describes the possibility of usage of drawing method for production of pipes of fibered composite AL-B. The authors suggest using a construction of drawing mill, where the material volume reduction is carried out on the floating plug. With an aim of quality improvement technological shell is used. There were examined the mechanisms of joint deforming of compact blank part and solid shell.

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Quan, Guo Zheng, Meng Han Wang, Jie Zhou, and Ying Tong. "Deforming Mechanisms of Two-Pass Drawing Process of an Aluminum Tube from Circular to Rectangle Section." Materials Science Forum 575-578 (April 2008): 549–54. http://dx.doi.org/10.4028/www.scientific.net/msf.575-578.549.

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The aluminum tube with rectangle section can be produced by two-pass drawing process including non-plug and with-plug drawing. It is an effective method to study the deforming mechanisms by simulation, based on which the section varying of two-pass drawing got schemed and the relevant dies with reasonable dimensions got designed. The dynamics model and elasto-plastic FE model of the non-plug and with-plug drawing were established based on FEM software, then the simulation was performed. The sizing section of drawing die got optimized with angle β=178°, which eliminated instability. The influence of different semi-die angle 2 a on drawing load was researched, and a proper value of 2 a and 1 a was found. The touch boundary and touch-stress distribution of transitional drawing were achieved. Furthermore the residual stress and spring-back strain distribution after final drawing were achieved, which contributes to modifying the dimensions of rectangle sizing section.

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Sun, Zhichao. "EFFECTS OF PARAMETERS ON DEFORMING FORCE OF TUBE INVERSION BY AXIAL DRAWING." Chinese Journal of Mechanical Engineering 38, no. 10 (2002): 74. http://dx.doi.org/10.3901/jme.2002.10.074.

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Xiao, Xiao Ting, Li Cheng Huang, Yi Juan Liao, Li Guang Tan, and Qiao Yu Chen. "Numerical Simulation of Deep-Drawing Processes of Square Cup under Bilateral Constrained Conditions." Advanced Materials Research 189-193 (February 2011): 2892–96. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.2892.

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In this paper, the flow rule of metal during the deep drawing of the non-symmetry workpieces was investigated by means of the numerical simulation of deep-drawing processes of square cup under bilateral constrained conditions. The numerical simulation was carried out by advanced analysis software Dynaform5.5. SUS304 stainless steel was used as the deforming materials. The influence of different friction coefficient and blank holder force on the drawing forming quality was analyzed. The results showed that the material flow in different areas has different trends with increase of friction coefficient and blank holder force.

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Trofimov, V. N., T. V. Kuznetsova, D. S. Anishchuk, A. V. Eseneev, and M. G. Shtutsa. "Optimal geometry of the channel of the drawing tool when deforming bimetallic composites." Russian Journal of Non-Ferrous Metals 55, no. 1 (January 2014): 26–30. http://dx.doi.org/10.3103/s1067821214010167.

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Attanasio, Aldo, Elisabetta Ceretti, Antonio Fiorentino, Luca Mazzoni, and Claudio Giardini. "Experimental Tests to Study Feasibility and Formability in Incremental Forming Process." Key Engineering Materials 410-411 (March 2009): 391–400. http://dx.doi.org/10.4028/www.scientific.net/kem.410-411.391.

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This paper deals with Incremental Sheet Forming (ISF), a sheet metal forming process, that knew a wide development in the last years. It consists of a simple hemispherical tool that, moving along a defined path by means of either a CNC machine or a robot or a self designed device, locally deforms a metal sheet. A lot of experimental and simulative researches have been conducted in this field with different aims: to study the sheet formability and part feasibility as a function of the process parameters; to define models able to forecast the final sheet thickness as a function of the drawing angle and tool path strategy; to understand how the sheet deforms and how formability limits can be defined. Nowadays, a lot of these topics are still open. In this paper, the results obtained from an experimental campaign performed to study sheet formability and final part feasibility are reported. The ISF tests were conducted deforming FeP04 deep drawing steel sheet 0.8 mm thick and analyzing the influence of the tool path strategy and of the adopted ISF technique (Single Point Incremental Forming Vs. Two Points Incremental Forming). The part feasibility and formability were evaluated considering final sheet thickness, geometrical errors of the final part, maximum wall angle and depth at which the sheet breaks. Moreover, process forces measurements were carried out by means of a specific device developed by the Authors, allowing to obtain important information about the load acting on the deforming device and necessary for deforming sheet.

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Halaczek, Dariusz, and Eugniusz Hadasik. "The Influence of the Components of the Bimetallic Tubes for the Way of Deforming in the Hollow Drawing Process." Solid State Phenomena 246 (February 2016): 225–30. http://dx.doi.org/10.4028/www.scientific.net/ssp.246.225.

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Processes for producing bimetallic tubes can be divided for: producing the bimetallic tubes in the cold process, with preheating or with the heat treatment after each pull. First method relates to the metal with high ductility (copper, copper alloys, aluminum, aluminum alloys, zinc, etc.), second to the metals or bi-metal components, in one of which has significantly different plastic properties from the second for example: low-carbon steel, high alloy steel, etc. One of the methods for the production of bimetallic tubes is hollow cold drawing process. In this process the wall thickness is changed, which means the wall becomes thicker, the wall becomes thinner or remains unchanged. The aim of the research was to determine the effect of the influence of the share of components of bimetallic cooper tube species M1E, and the copper tube - species M63 in the arrangement M1E - M63 and M63 - M1E in the tubes hollow drawing process for the distribution and size of deformation of the individual layers. The research program included:- production of the bimetallic tubes by hollow drawing with a different percentage of the cross-section components and with a variable arrangement of layers,- determination of the size and distribution of true strain of the individual layers on the cross-section of bimetallic tube,- determination of replacement/equivalent strain for the deformable wall of the bimetallic tube,- evaluation of the usability of the graph of changes in thickness of the tube wall in the hollow drawing process for the drawing process of the bimetallic tubes.

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Більше джерел

Дисертації з теми "Deforming drawing"

Шепеленко, Ігор Віталійович. "Наукові основи технології нанесення антифрикційних покриттів з використанням пластичного деформування". Doctoral thesis, Київ, 2021. https://ela.kpi.ua/handle/123456789/45249.

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Дисертація присвячена вирішенню науково-технічної проблеми, що полягає в створенні наукових основ технології нанесення антифрикційних покриттів з використанням холодного пластичного деформування задля підвищення якості поверхонь тертя деталей з малопластичних матеріалів. Розроблено експериментальна модель контактної взаємодії одиничної мікронерівності з інструментом при ФАБО, що дозволило встановити основні закономірності процесу та забезпечити ефективне протікання мікрорізання і заповнення мікрозападин антифрикційним матеріалом. Для підвищення якості нанесення антифрикційних покриттів запропоновано використання деформуючого протягування задля покращення адгезійної взаємодії з основним матеріалом, отримання робочої поверхні деталі з поліпшеними фізикомеханічними властивостями і шорсткістю, близькою до рівноважної. На підставі проведених досліджень розроблено нові технологічні процеси нанесення антифрикційних покриттів з використанням ФАБО та деформуючого протягування.

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Franzén, Sebastian, and Martin Ramstedt. "Dimensionering av ett verktygslöst profilsystem för solpaneler." Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-52932.

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Arbetet dimensionerar ett panelsystem för att motstå yttre påfrestningar som snö och vind, samtidigt som att det ska erbjuda oförstörande av- och påmontering. Hållfasthetsberäkningar har utförts med hjälp av statiska balkfall. Dimensionering av spår, snäppfunktion och låsningar i profilsystemet har utförts. Konstruktionsritningar har utförts, baserade på dimensionering och standarder. Med hjälp av detta arbete går det att tillverka detta system, åtminstone i ett prototypstadie.
This work dimensions a panel system to withstand external loads such as snow and wind, while it will offer non-destructive removing and assembly. Strength calculations have been performed using static beam cases. The design of the track, the snap-fit assembly and locks in the profile system has been changed. Construction drawings have been made, based on the calculated dimensions and required ISO-standards. With the existing work, it is possible to manufacture this system, at least in a prototype stage.

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Книги з теми "Deforming drawing"

undifferentiated, Alexander Walker. Intermarriage; or the Mode in Which, and the Causes Why, Beauty, Health, and Intellect Result from Certain Unions, and Deformity, Disease and Insanity from Others, Illustrated by Drawings, Etc. HardPress, 2020.

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Частини книг з теми "Deforming drawing"

Bayly, Brian. "Disequilibrium 3: Internal Variables." In Chemical Change in Deforming Materials. Oxford University Press, 1993. http://dx.doi.org/10.1093/oso/9780195067644.003.0010.

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In Chapters 2, 3, and 4, the usefulness of the concept chemical potential has been explored for describing and predicting movement of material from point to point in space—from a location where a component's potential is high to a location where its potential is lower. But chemical potential influences another type of material behavior as well, as in the example at the end of Chapter 2, the polymerization of vinyl chloride. The polymerization is a process that runs at a certain rate, like diffusion of salt, and the rate depends on the potential difference between the starting state and the end state; but unlike diffusion of salt, there is no overall movement from one location to a new location—the vinyl chloride simply polymerizes where it is. There are movements, of course, on the scale of the interatomic distances, but nothing corresponding to the 4 m of travel that appears in the discussion of the dike. If no travel is involved, it is not so easy to calculate a potential gradient along the travel path and go on to predict a rate of response. Yet there definitely is a rate of response, even with PVC polymerizing. The purpose of this chapter is to consider this matter; we shall then be equipped to begin considering nonhydrostatic conditions. The essential idea is to represent all possible degrees of polymerization along an axis, as in Figure 5.1. The figure is drawn to represent a condition where the chemical potential per kilogram is greater in the monomer form than in the dimer form, i.e., a condition where the material polymerizes spontaneously. Suppose we know the chemical potential per kilogram for all degrees of polymerization and also, at some temperature, the rates at which 2 forms from 1, 3 forms from 2, etc. (per kg of the starting form in a pure state). Then we arbitrarily pick a distance on the horizontal axis to separate point 1 from point 2.

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Тези доповідей конференцій з теми "Deforming drawing"

Reeve, Hayden M., Ann M. Mescher, and Ashley F. Emery. "Investigation of Polymer Optical Fiber Drawing Force and Heat Transfer." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47445.

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In this study, the force required to draw a polymer preform into optical fiber is predicted and measured, along with the resultant free surface shape of the polymer, as it is heated in an enclosed cylindrical furnace. The applied drawing force affects the degree of chain alignment within the polymer. Chain alignment causes orientational birefringence, an unwanted property that attenuates any propagating optical signal. The draw force is a function of the highly temperature dependent polymer viscosity. Therefore accurate prediction of the drawing force requires a detailed investigation of the heat transfer within the furnace. In this investigation, the full axi-symmetric conjugate problem (including both natural convection and thermal radiation) was solved using the commercial finite element package FIDAP. In addition, the location of the polymer/air interface was solved for as part of the problem and was not prescribed beforehand. Results show that thermal radiation accounts for approximately 70% of the total heating experienced by the deforming polymer, but only 15% of the cooling. The draw force is very sensitive to both the furnace wall temperature and to the feed rate of the polymer. Numerical results compared well with the experimentally measured draw tension and neck-down profiles for several preform diameters, draw speeds, and furnace temperatures. The predicted draw forces were typically within 20% of the experimentally measured values.

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Guzel, Bulent, and Fatih C. Korkmaz. "Experimental Investigation of Water Exit Under Hydrophobic Effects." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54636.

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Prediction of hydrodynamic loads during water exit of a body is of a great importance in designing the marine vehicles that take off from the free water surface such as sea planes and wing-in-ground effect vehicles (WIG), and that pierce through the free surface like missiles and submarines. The results of an experimental investigation on water exit of two different geometries, sphere and flat plate, with hydrophobic surfaces are presented in this paper. With and without the hydrophobic effects present, different fluid dynamics phenomena like free surface evolution, deformation and break up of free surface, wave generation, splash, air entrapment and water detachment from the solid surfaces during a water exit event have been examined. The non-dimensional exit coefficient, Ce is a function of the total vertical hydrodynamic force which depends on the geometry of the object and the hydrodynamic conditions along with the water parameters. Our study is aimed at understanding and modeling the nonlinear free surface effects and the dynamics of water exit under an extended range of parameters including hydrophobic effects. In this study, due to lack of the experimental data on the water exit problem in literature, water exit tests have been set up, first for initially partially immersed spheres and flat plates, with their center above the free surface, to be towed vertically from the water surface at various speeds. Secondly, buoyancy driven water exit of a fully immersed sphere is investigated. It is observed that when the sphere rises up, it first starts deforming the free surface, and then pierces into it. The thin water layer attached to the surface of the sphere is drawn back to the test tank as the sphere moves further upward. This causes breaking of the free surface, air entrapment and wave generation in the water tank. From digital images captured using a high speed camera, free surface breakup and water detachment at different velocities are observed and the time evolution of the water detachment and the exit characteristics are measured during a water exit event. The position of the sphere and its velocity are plotted against time. A detailed measurement of the global loads on the test objects during exit is carried out by employing strain gauges. We also showed the effects of water detachment on the test bodies during exit and after fully exited via strain gauges. All this data is also collected under the hydrophobic effects, to show how the change in surface characteristics would have significant impacts on the water exit phenomenon. Analyzing the difference in occurrence of water flow separation, the change in kinetic energy of the fluid and the free surface deformation under the hydrophobic effects may help give a better explanation of the phenomena observed during water exit and improve the design characteristics of marine structures for a water exit event.

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