Analysis of characteristics of the wave field in the problem diagnostics of heterogeneities thermoelastic areas

Authors

  • Vovk L.P. State Technical University "Donetsk National Technical University", Gorlovka, Ukraine
  • Kisel E.S. State Technical University "Donetsk National Technical University", Gorlovka, Ukraine

UDC

539.3

Abstract

The main idea of this study is the creation of universal analytical selection’s methods of singular components of solution in explicit form with obligatory subsequent account of these results for the effectiveness increase of numerical schemes and methods of investigation. The conducted analytically analysis of the impact of the temperature field on the resonance frequency spectrum for the sectionally heterogeneous rectangular area showed that the superposition method in this interpretation can be considered as common methodological approach, extending the opportunities of researches of the composite structures deflected mode. To test the validity of suggested analytical methods, the discrete problems with known analytical solutions and experimental results have been solved. The adequacy of developed technique and numerical results of research are compared with numerical results obtained by the finite elements method in ANSYS computer system. It can be insisted that the temperature field impact on the resonance frequency spectrum for the sectionally heterogeneous rectangular area is insignificant. It is confirmed by the conducted finite-element analysis for various combinations of geometric, elastic and temperature parameters of two-layer rectangular area, since resonance frequencies, calculated with and without temperature field, differ insignificantly.

Keywords:

thermo-elastic region, local stress concentration, stress-strain state, strength calculation, singular points, section details, natural frequencies

Author Infos

Leonid P. Vovk

д-р техн. наук, профессор кафедры высшей математики Автомобильно-дорожного института ГВУЗ "Донецкий национальный технический университет"

e-mail: lv777@list.ru

Ekaterina S. Kisel

старший преподаватель кафедры высшей математики Автомобильно-дорожного института ГВУЗ "Донецкий национальный технический университет"

e-mail: e.s.kisel@gmail.com

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Issue

2017. No. 1

Pages

28-44

Submitted

2016-04-12

Published

2017-03-30

How to Cite

Vovk L.P., Kisel E.S. Analysis of characteristics of the wave field in the problem diagnostics of heterogeneities thermoelastic areas. Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation, 2017, no. 1, pp. 28-44. (In Russian)

Copyright (c) 2017 Vovk L.P., Kisel E.S.

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