FEATURES OF DEFORMING OF COMPOSITE INDUCTORS DURING ELECTROMAGNETIC PROCESSING OF MATERIALS
Abstract
Introduction. The development of many branches of mechanical engineering at the current stage requires the development and application of new technologies that are characterized by high energy efficiency and a small amount of waste. Such technologies include those that use electromagnetic field energy. The energy of the electromagnetic field can be used to change the shape of workpieces, to connect individual structural elements (for example, by welding), to control the physical properties of the material (for example, by induction heating), etc. Carrying out calculation studies at the stage of designing and proving the appropriate technological equipment allows determining the rational values of key parameters, which ensures the achievement of the goals of the technological operation and the operability of the equipment. Purpose. When the energy of the electromagnetic field is used to exert a force on the processed workpiece, the technological equipment is equally subject to force. The purpose of the article is to create effective methods of calculating the strength of technological equipment together with the workpiece, and conducting the corresponding calculation analysis is an urgent task in the scientific and practical sense. Results. The article proposes an effective method of analyzing the elastic-plastic deformation of composite structures under the influence of an electromagnetic field. The general mathematical formulation of the coupled problem of the deformation of conductive bodies in the presence of an electromagnetic field is considered. To construct a numerical solution method, the initial problem is reduced to finding the minimum of the total energy of the system. The finite element method is used as a numerical solution method. The proposed method is applied to the analysis of the deformation of the "inductor-workpiece" system of the technological operation of magnetic pulse processing of metals. Conclusions. Some results are presented that allow making certain recommendations regarding the design and application of technological operations of a similar class.
Downloads
References
2. Sandstrom D.J. Consolidating metal powders magnetically. Metal. Progr. 1964. vol. 86 (3). pp. 215–221.
3. Psyk V., Risch D., Kinsey B.L., Tekkaya A.E., Kleiner M. Electromagnetic forming – a review. Journal of Materials Processing Technology. 2011. vol. 211(5). pp. 787–829.
4. Mamalis A.G., Manolakos D.E., Kladas A.G., Koumoutsos A.K. Electromagnetic forming and powder processing: trends and developments. Applied Mechanics Reviews. 2004. vol. 57(4). pp. 299–324.
5. Batygin Y.V., Golovashchenko S.F., Gnatov A.V. Pulsed electromagnetic attraction of sheet metals-fundamentals and perspective applications. Journal of Materials Processing Technology. 2013. vol. 213(3). pp. 444–452.
6. Batygin Y. V., Golovashchenko S. F., Gnatov A. V. Pulsed electromagnetic attraction of nonmagnetic sheet metals. Journal of Materials Processing Technology. 2014. vol. 214(2). pp. 390–401.
7. Stiemer M., Unger J., Svendsen B., Blum H. Algorithmic formulation and numerical implementation of coupled electromagnetic-inelastic continuum models for electromagnetic metal forming. International journal for numerical methods in engineering. 2006. no. 68 (13). pp. 1301–1328.
8. Altenbach H., Morachkovsky O., Naumenko K., Lavinsky D. Inelastic deformation of conductive bodies in electromagnetic fields. Continuum Mechanics and Thermodynamic. 2016. Vol. 28(5). pp. 1421–1433.
9. Cazzani A., Atluri S. N. Four-noded mixed finite elements, using unsymmetric stresses, for linear analysis of membranes. Comput. Mech. 1993. Vol. 11(4). pp. 229–251.
10. Cazzani A., Garusi E., Tralli A., Atluri S. N. A four-node hybrid as-sumedstrain finite element f or laminated composite plates. CMC Comput. Mater. Contin. 2005. Vol, 2(1). pp. 23–38.
