Article

Received 13.03.2022

Revised 16.07.2022

Accepted 22.08.2022

Retrieved from Vol. 26, No. 3, 2022

Pages 427 -432

Shlyun, N., & Zaiets, Yu. (2022). About the internal mechanism of thermal damage in reinforced composites with thermomechanical incompatibility of their phases. The National Transport University Bulletin, 26(3), 427-432. https://doi.org/10.33744/2308-6645-2022-3-53-427-432

About the internal mechanism of thermal damage in reinforced composites with thermomechanical incompatibility of their phases

Nataliia Shlyun Yuliia Zaiets

It is known that in a homogeneous elastic medium, free from external restrictions of its displacements, temperature fields varying linearly along spatial variables do not cause thermoelastic stresses. These stresses can arise only in cases where external restrictions are imposed on the boundary of the system (an external mechanism for creating thermal stresses) or the system is inhomogeneous (an internal mechanism for creating thermal stresses). The paper considers the internal mechanism for creating thermal stresses in elastic matrices reinforced with fibers or rods. Based on the methods of the theory of thermoelasticity, the resolving ordinary differential equations are formulated, their solutions are constructed in a closed form. It is shown that additional thermal stresses are concentrated on the interface of the composite phases and can reach limiting values even at moderate values of the system temperature.

 

composite material; thermal damage; stress field; thermal stressed state; fiber reinforced matrix
  1. Huliaiev V.I., Haidachuk V.V., Hustieliev O.O., Shevchuk L.V Termonapruzhenyi stan sharuvato-nednoridnykh dorozhnikh pokryttiv. Prykladna mekhanika 2021. – 57, №1 – 100-114 s.
  2. Huliaiev V.I., Haidachuk V.V., Mozghovyi V.V., ZaietsYu.O., Shevchuk L.V., Shliun N.V. Termopruzhnyistanbahatosharovykhdorozhnikhpokryttiv // Monohrafiia – K. : NTU, 2018. – 272 s
  3. Kovalenko A.D. Termoupruhost. Vyshcha shkola. Kyev – 1975
  4. Novatskyi V. Dynamycheskye zadachy termoupruhosty. – М.: Myr, 1970
  5. Sendetsky Dzh. Mekhanyka kompozytnukh materyalov. Т.2. – М.: Myr, 1978
  6. Beleicheva, T.G., Ziling, K.K. Thermoelastic axisymmetric problem for a two-layer cylinder. J Appl Mech Tech Phys 19, 108–113 (1978).
  7. Carlson D.E. Thermoelasticity, Encyclopedia of Physics. V. Via/2 (ed. Trusdell C.), Springer, Berlin, 1972.
  8. Christian Karch. Micromechanical analysis of thermal expansion coefficients. Modeling and Numerical Simulation of Material Science. – 2014, V.4, №3, – Pp. 1-15.
  9. Christiansen R.M. Mechanics of Composite Materials; Wiley: New York, NY USA, 1979.
  10. Elwardany M.D. King G., Planche J.P., Rodezno C., Christiansen D., Fertig III R.S., Kuhn K.H., Bhulyan F.H. Internal restraint damage mechanism for age-induced vavement surface damage. Asphalt Paving Technology: Journal of the Association of Asphalt Paving Technologists. – 2019. – 88.
  11. Hetnarski R.B. Ignaczak J. Mathematical Theory of Elaticity, Taylor and Francis, New York, 2004.

https://doi.org/10.33744/2308-6645-2022-3-53-427-432