Investigation of the Tubular and Cylindrical Billets Stamping by Rolling Process with the Use of Computer Simulation

Matvijchuk, Viktor; Shtuts, Andrii; Kolisnyk, Mykola; Kupchuk, Ihor; Derevenko, Iryna

doi:10.3311/ppme.18659

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…It is possible to obtain complex profiled products with developed thin-walled elements with high precision by planting. At the same time, due to the achievement of significant deformations, there is a risk of destruction of the workpiece material due to its insufficient deformability [2,3]. A variety of methods are used for the study of SSS in OMD processes: experimental, analytical, and simulation modeling.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

Analysis of Stress-Strain State (Sss) of Billet Material in the Course of Setting by Resource-Saving Method of Roll Stamping

Matviychuk,

Mykhalevych,

Shtuts

2023

Vibrations in Engineering and Technology

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The processes of planting blanks by the rolling stamping method allow for the efficient production of a wide range of high-quality products, but the possibility of material destruction during deformation prevents the expansion of their technological capabilities. Further development of the processes is possible through the development of new technological schemes based on the analysis of deformation kinematics and the appointment of favorable technological parameters, taking into account their influence on the stress-strain state and deformability of the material of the workpieces. In order to widely use the method of assessing the deformability of workpieces, a reliable technique is needed, which provides for the presence of a mathematical model of the trajectory of deformation of material particles in the coordinates "stress state indicator - accumulated plastic deformation before failure." The work uses an approach to finding an analytical representation of the deformation trajectory based on the construction of a differential equation between the components of plastic deformation increments, followed by the solution of this equation and the identification of its parameters based on experimental data. According to the results of the research, the deformation trajectories of the material particles of the peripheral surface of the flange when planting by rolling stamping method were schematically constructed in the coordinates "intensity of deformations - stress state indicator". Based on the built model, damage accumulation can be simulated by changing the values of the model parameters for different materials and deformation paths. An analytical representation of the deformation trajectory in a parametric form was obtained. The advantages of representing the deformation trajectory in the form of parametric equations are the convenience of analyzing these trajectories. The advantage of the model of the trajectory of deformation of material particles in the coordinates "stress state indicator - plastic strain accumulated before failure" is the absence of a material constant in the analytical expression for the stress state, and the consequence is additional convenience of analyzing ratios and selecting the value of the material constant based on experimental data. Key words: rolling stamping, flange landing, stress-strain state, mathematical model of the deformation trajectory.

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Section: Formulation Of the Problemmentioning

confidence: 99%

Analysis of Stress-Strain State (Sss) of Billet Material in the Course of Setting by Resource-Saving Method of Roll Stamping

Matviychuk,

Mykhalevych,

Shtuts

2023

Vibrations in Engineering and Technology

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“…зафіксували значення граничної накопиченої деформації, які становлять 1.15 і 0.8 відповідно. Це свідчить про помітне зниження рівня деформованості на 30% в порівнянні з іншими параметрами [3][4][5][6].…”

Section: висновкиunclassified

Investigation of Stamping by Wrapping Processes Through Material Deformation Modeling Analysis

Mykhalevych,

Shtuts,

Kolisnyk

2023

Engineering, Energy, Transport Aic

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This scientific article addresses the pressing issue of material deformation modeling in the context of stamping by wrapping processes (SWP). The main challenges in the development of these processes include the likelihood of workpiece failure due to insufficient material plasticity and unfavorable stress-strain states, determined by technological process parameters. Thus, effective SWP process development requires the utilization of material deformation modeling. The article indicates that any material deformation model in plastic deformation processes comprises three main elements: Analytical representation of the curve or surface of boundary plastic deformations during stationary deformation: This element describes how the material's plastic deformation changes during stationary deformation with alterations in the invariant stress state indicators. Mathematical model of the deformation path in coordinates of stress state indicators - accumulated plastic deformation. This model determines the path along which material deformation develops with changing stress state indicators and is dependent on accumulated plastic deformation. Damage accumulation model: This element takes into account accumulated damage in the material and can be used to predict workpiece failure. Specifically, the article analyzes the surface of boundary plastic deformations during stationary cold deformation and employs terminology to describe the dependence of accumulated plastic deformation until failure on invariant stress state indicators. The term "stationary deformation" is used to denote material deformation under unchanged values of these indicators.

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“…Аналіз останніх досліджень і публікацій. Розробка технологічних процесів холодного ШО на основі оцінки деформовності матеріалом широко представлена в роботах [3,4]. Проблеми ж виготовлення методом гарячого ШО виробів із трубних і суцільних циліндричних заготовок на сьогодні мало досліджені.…”

Section: вібрації в техніці та технологіяхunclassified

Stamping by Rolling Blanks Using Advanced Energy-Efficient Induction Heating

Matviychuk

Savkiv

2022

Vibrations in Engineering and Technology

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The article presents the results of development and research of technological schemes of cold forming by rolling (CFR) of blanks. Expansion of the technological capabilities of the processes of COP and improving the quality of products is based on the control of active friction forces and deformability of the processed metals. The main limiting factors in the application of SHO processes are insufficient ductility of metals, which causes the risk of destruction of workpieces, as well as relatively large deformation forces that cause unfavorable operating conditions of the rolling bearing unit. The solution of these problems is facilitated by the transition to hot SHO. However, the problems of manufacturing by the hot SHO method of products from tubular and solid cylindrical billets have been little studied to date. An effective process of billets heating is induction heating, but its application is characterized by relatively low efficiency. In this work, it is recommended to use new materials and technology for the manufacture of induction heaters for the implementation of hot SHO, which open up opportunities for improving induction heating equipment for industrial applications. The use of new generation induction heaters to replace other heating methods in metalworking has significant advantages: higher efficiency; less scattered magnetic fields; less complexity of the coil design; increased geometric freedom; no water cooling is required. In order to study the hot SHO, devices for rolling billets with conical and cylindrical rolls were designed and manufactured. Physical modeling of hot SHO by using solid cylindrical lead billets was carried out. It is experimentally proved that the process of hot SHO allows to achieve significant degrees of deformation even at unfavorable stress-strain state and insignificant power of the equipment. Thus, the process of induction heating of blanks can be quite effective when processing them by hot SHO.

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Investigation of the Tubular and Cylindrical Billets Stamping by Rolling Process with the Use of Computer Simulation

Cited by 8 publications

References 8 publications

Analysis of Stress-Strain State (Sss) of Billet Material in the Course of Setting by Resource-Saving Method of Roll Stamping

Analysis of Stress-Strain State (Sss) of Billet Material in the Course of Setting by Resource-Saving Method of Roll Stamping

Investigation of Stamping by Wrapping Processes Through Material Deformation Modeling Analysis

Stamping by Rolling Blanks Using Advanced Energy-Efficient Induction Heating

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