DOI: https://doi.org/10.15407/publishing2018.51.125
CALCULATION OF PARAMETERS OF A PULSE ELECTRODYNAMIC OSCILLATOR TO EXCITE OF ELASTIC WAVES
A.D. Horodzha, K.A. Horodzha, B.O. Troshchynskyi, O.A. Pogrebnyi Kyiv National University of Construction and Architecture, Povitroflotskyi, 31, Kyiv37, 03037, Ukraine, еmail:
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The possibility of using pulsed electrodynamic and inductiondynamic oscillators for the excitation of wave processes in a concrete structure for diagnosis of its states based on the echomethod is considered. A simplified method for calculating the functional dependence in time of the electromagnetic force when connecting such a converter to a precharged capacitor battery is described. The paper takes into account the nonuniform distribution of current density over the cross section of the conductors, and also uses the approximation of a relatively small change in the moving part distance during the discharge current flow, which allows us to consider a discharge circuit with constant electrical parameters. The conditions for obtaining the maximum value of the force are determined for a given geometrical dimensions of the oscillator. References 6, figures 3. Key words: pulsed electrodynamic oscillator, discharge current, electromagnetic force, mechanical wave processes, diagnostics of concrete structures.
1. Barashikov A.Ya., Horodzha A.D. Integral quality assessment of reinforced concrete structures using the echo method. Nadezhnost’ I dolgovechnost’ mashin I sooruzhenii. 1988. V.14. P. 37–46. (Rus) 2. Zeveke G.V., Ionkin P.A., Netushil A.B., Strahov C.B. Foundation of circuit theory. Moskva: Energiya, 1975. 752 p. (Rus) 3. Ivashin V.V. Karkovski L.I. The choice of the rational geometry of the magnetic inductiondynamic motor with nonmagnetic armature. Electrotehnika. 1981. N 8. P. 30–33. (Rus) 4. Bolyuh B.F., Olekseenko C.B., Shchukin I.C. Influence of parameters of a ferromagnetic core on the efficiency of an inductiondynamic motor. Electrotehnika I Electromechanika. 2012. N 6. P. 20–27. (Rus) 5. Roi N.A. Pulsed electrodynamic oscillator. Akusticheskii zhyrnal. 1970. V ХVI. N. 1. P. 121–128. (Rus) 6. Bessonov L.A. Theoretical electrical engineering. Мoskva: Vysshaya shkola. 1973. 752 p. (Rus)
Received 10.10.2018
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