Development of the Mathematical Model for Sheet Blanks Forming Calculation Using Simulation in ANSYS Software

Trotsko, Oleg; Shlyk, Sergii

doi:10.1109/stc-csit.2018.8526614

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…The material is considered as isotropic elasticplastic with hardening. The mesh acceleration in the median plane, its velocity and displacement is determined from the equilibrium equations for each node [3,6]:…”

Section: Methods Of Researchmentioning

confidence: 99%

“…ANSYS Autodyn is an analytical tool for solving problems in explicit statement for simulation of complex nonlinear dynamics of solids, liquids, gases and their interaction. It represents a powerful tool for TECHNOLOGY AUDIT AND PRODUCTION RESERVES -№ 3/1(59), 2021 ISSN 2664-9969 interdisciplinary calculations in problems with explicit statement, which provides a wide range of possibilities for simulation, including high-speed strikes or explosion [3].…”

Section: Introductionmentioning

confidence: 99%

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Research of ANSYS Autodyn capabilities in evaluating the landmine blast resistance of specialized armored vehicles

Shlyk

2021

TAPR

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The object of research is the processes of pulse explosive loading in an explicit formulation for simulation of complex nonlinear dynamics of solids, gases, and their interactions. One of the most problematic areas of modern studies of nonlinear dynamic loads of materials using a numerical analysis is that such studies usually do not take into account the characteristic transition of the stationary deformation zone of the loaded material to the unsteady one and the front pressure and shockwave velocity variation by time. The work is aimed at developing a mathematical model of a pulsed load of materials by a shockwave, developing a mathematical apparatus for calculating the parameters of a shockwave, creating analytical dependences of the interaction of a shockwave with a loaded surface. A study of dynamic explosive loading using software based on an explicit method for solving the equations of continuum mechanics is proposed. In this work, the stress-state equation at a point of the material under pulsed load conditions was further developed, methods for determining the principal stresses and the invariant of the stress tensor, taking into account the pulsed nature of the load, were established. The character of the behavior of the shockwave formed as a result of the detonation of the explosive has been established. Analytical dependences of the interaction of a shockwave with a loaded surface are compiled. A mathematical apparatus has been developed for calculating such parameters of the shockwave as the detonation front pressure and its change in time and the velocity of the shockwave at the moment when it reaches the surface. Mathematical dependences have been developed and proposed, which, in contrast to the existing ones, make it possible to determine the current values of stresses and strains passing through the points of the actual stress curve, as well as the intensity of stresses and strains under pulse loading of metals. On the basis of theoretical and experimental studies of the parameters of body material deformation under the action of explosive loading, the mechanisms of destruction of the KrAZ «Shrek» and KrAZ «Fiona» (Ukraine) specialized armored vehicles body were clarified to establish the compliance of the declared landmine resistance of vehicles with the STANAG 4569 standardization agreement.

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Section: Methods Of Researchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research of ANSYS Autodyn capabilities in evaluating the landmine blast resistance of specialized armored vehicles

Shlyk

2021

TAPR

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“…The higher the pressure, the higher the value of V m , the more the shell deforms. In [12], the possibilities of using software packages that use an explicit method for solving the equations of continuum mechanics in problems of nonstationary processes, accompanied by high strain rates, are considered. Ansys AUTODYN is an example of such an application -a software tool that provides a wide range of simulation capabilities.…”

Section: Methods Of Researchmentioning

confidence: 99%

“…To build a «stress-strain» diagram for a material, subjected to explosive forming, the authors of [12] propose to use the following dependencies:…”

Section: Methods Of Researchmentioning

confidence: 99%

Application of intelligently controlled technologies in designing of technological processes for explosive forming of shell parts

Shlyk

2021

TAPR

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The object of research is the processes of pulse metalworking (hydroexplosive, magnetic pulse, electrohydraulic, gas detonation forming, etc.). Among these methods of forming for the production of aircrafts engines parts from cylindrical and conical blanks, the most efficient in terms of its energy capabilities and overall dimensions is explosive. The modern level of theory and practice of metal forming processes allows, on the basis of a systematic approach and control theory, to determine the optimal parameters of plastic forming processes, select the best technical solutions, and create a precondition for the transition to complex automation. The most difficult task of metals forming methods optimizing is to find the best solution among many potentially possible ones, considering the introduced restrictions and efficiency criteria, environmental, economic, technical, ergonomic, and other requirements. The most problematic is that it is impossible to optimize the process of forming post-factum (finishing works, elimination of defects in shape and size, welding of cracks, etc. are required), therefore, when solving optimization problems, the implementation of the feedback principle is required - comparison of the value of the controlled variable, determined by the control program, with the desired value. In general, the processes of metal forming by pressure are characterized by a variety of problems of the theory of optimal control, the solution of which is carried out by methods of mathematical programming. And, although the equipment for pulse processing can have a different design, it necessarily includes structural elements that make it possible to convert the energy of the source and with its help (through the action of a solid body, transmitting medium, or field) to deform the metal of the workpiece. Due to this, in this work, it is proposed to control the quality of the obtained parts by varying the degree of deformation of the workpiece in the process of forming. The result of the work is the development of an integrated intelligent system, with the help of which it is possible to carry out the computer-aided design of almost all pulse-action processes based on the intelligent selection of suitable forming parameters.

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“…Development of drawing in small batches complex technologies, which also include improvement of operations previous and subsequent to drawing by using thermomechanical, pulse, electroerosion processing [2][3][4][5][6], determining optimal metal processing power schedules [7][8][9][10], allows to make wire and deformed semi-finished products from operational properties and schedules [11][12][13][14][15], which are inaccessible to the multihole drawing machine. Achieving these goals is facilitated by the increasing use of mathematical modeling to assess the stress-strain and thermal state of materials, taking into account their plastic and thermophysical properties, accumulated damage and cracks, followed by assessment of their healing properties [16][17][18][19][20]. Such materials to some extent reduce the stability of dies, but this is quite acceptable with low series and frequent changes in the range of forgings.…”

Section: Introductionmentioning

confidence: 99%

Cold drawing schedules for RSt 34-2 (1.0034) steel wire for correction of overheating defects and breakless ensuring

et al. 2021

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The paper’s authors researched the defects correction for RSt 34-2 (1.0034) steel wire, obtained as result of its overheating at 1140...1160 °C. Instead of the re-heat treatment method, the authors proposed five cold drawing, annealing and overheating combination schedules, which ensure the increase in strength to DIN EN ISO 6892-1-2020 requirements. The experiments were performed on 4 mm diameter wire with increased grain size (up to 70 μm). It was found that at low initial values of wire material’s ultimate strength and yield strength there are frequent breaks of the wire at ends clamping by tongs. An equation that allows to predict the acceptable cross-sectional area of the wire end sections during drawing has been devised. An inequation for relating the Korber-Eichinger equation parameters and the wire ends sharpened sizes with reduced area due to the tongs jaws deepening after clamping the wire ends has been work out. The authors experimentally proved that the drawing overheated wire process designing taking into account the conditions of this inequation guarantees the elimination of breaks both at the wire end (at the drawing beginning) and at the process stable stage. The drawing processes for overheated wire have been developed eliminated the additional heat treatment operation to overheating defects correction.

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Development of the Mathematical Model for Sheet Blanks Forming Calculation Using Simulation in ANSYS Software

Cited by 8 publications

References 3 publications

Research of ANSYS Autodyn capabilities in evaluating the landmine blast resistance of specialized armored vehicles

Research of ANSYS Autodyn capabilities in evaluating the landmine blast resistance of specialized armored vehicles

Application of intelligently controlled technologies in designing of technological processes for explosive forming of shell parts

Cold drawing schedules for RSt 34-2 (1.0034) steel wire for correction of overheating defects and breakless ensuring

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