EXPERIMENTAL INVESTIGATION OF THE CURRENT DISTRIBUTION ON THE SHEET BLANK SURFACE IN LINEAR TOOLS OF MAGNETIC-PULSED ATTRACTION
Keywords:measurement of the current space-temporal distribution, sheet metal, linear tool, magnetic-pulsed attraction, Rogowski coil
AbstractPurpose. The purpose of the present work consists in the characteristics experimental determination of the pulsed current transverse distribution on the surface of a sheet non-magnetic metal between the point contacts of the power source with different geometry of their connection under operating frequencies variation. Methodology. The measurements were carried out using methods based on the known positions of electromagnetism. The simulating low-voltage equipment was used, as well as high-voltage power sources with a high level of the stored energy. Numerical processing of the measurement results was carried out using standard programs from the «Wolfram Mathematica» package. Results. The space-temporal shapes of the pulsed current density transverse distribution on the surface of the sheet blank were obtained and analyzed. It is established that the degree of transverse current concentration in sheet metal relative to the center of the system in the operating frequency range of ~ 1.8…22 kHz depends very little on its temporal characteristics. It was found that the level of the transverse current concentration in the conditionally allocated band connecting the contacts of connection depends significantly on the ratio of the width of this band and the transverse dimensions of the contact connection. Moreover, the smallest current is concentrated in a strip whose width is much less than the distance between the contacts (£ 11…16 %). Originality. For the first time, the numerical estimates degree of the current transverse concentration are obtained and the dependence of this parameter on the temporal characteristics of the current, as well as on the method of connecting the power source contacts, is established. Practical value. The research results will allow creating the new more efficient linear tools of magnetic-pulsed attraction of sheet metals, based on the force interaction of conductors with unidirectional currents.
Psyk V., Risch D., Kinsey B.L., Tekkaya A.E., Kleiner M. Electromagnetic forming – A review. Journal of Materials Processing Technology, 2011, vol. 211, no. 5, pp. 787-829. doi: 10.1016/j.jmatprotec.2010.12.012.
Bondarenko A.Y., Finkelshtein V.B., Stepanov A.A. Experimental approbation of an electrodynamic direct electric system for external automobile body repair. Electrical engineering & electromechanics, 2014, no. 4, pp. 50-52. (Rus). doi: 10.20998/2074-272X.2014.4.09.
Bondarenko A.Yu., Finkelishteyn V.B., Gavrilova T.V. External straightening basket of the motor transport by means of electro dynamic of the systems at direct drive pulsed current. Bulletin of NTU «KhPI». Series: Car- and tractorbuilding, 2014, no. 9 (1052), pp. 66-72. (Rus).
Batygin Yu., Barbashova M., Sabokar O. Electromagnetic metal forming for advanced processing technologies. Springer International Publ. AG, 2018. 93 p. doi: 10.1007/978-3-319-74570-1.
Batygin Yu.V., Chaplygin E.A., Shinderuk S.A., Strelnikova V.A. The main inventions for technologies of the magnetic-pulsed attraction of the sheet metals. A brief review. Electrical engineering & electromechanics, 2018, no. 3, pp. 43-52. doi: 10.20998/2074-272X.2018.3.06.
Batygin Yu.V., Chaplygin E.A., Shinderuk S.A., Strelnikova V.A. Numerical estimates of currents and forces in linear tools of the magnetic-pulse attraction of metals. Part 1: Low electrical conductance metals. Electrical engineering & electromechanics, 2019, no. 5, pp. 40-44. doi: 10.20998/2074-272X.2019.5.07.
Griffiths D.J. Introduction to Electrodynamics. 4th Edition. Cambridge University Press. United Kingdom, 2017. 620 p.
Batygin Yu.V., Chaplygin E.A., Shinderuk S.A. Calculation of fields and currents in the induction system with the attractive screen and the additional coil as a tool for the straightening. Electrical engineering & electromechanics, 2015, no. 1, pp. 57-62. (Rus). doi: 10.20998/2074-272X.2015.1.11.
Imbert J.M., Winkler S.L., Worswick M.J., Olivera D.A., Golovashchenko S. The effect of tool–sheet interaction on damage evolution in electromagnetic forming of aluminum alloy sheet. Journal of Engineering Materials and Technology, 2005, vol. 127, no.1, pp. 145-153. doi: 10.1115/1.1839212.
Gnatov A., Argun S., Ulyanets O. Joint innovative double degree master program «Energy-saving technologies in transport». 2017 IEEE First Ukraine Conference on Electrical and Computer Engineering (UKRCON), May 2017. doi: 10.1109/ukrcon.2017.8100442.
How to Cite
Copyright (c) 2020 Yu. V. Batygin, E. A. Chaplygin, S. A. Shinderuk
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.