Peculiarities of distribution of dynamic disturbances in composite rods


The paper deals with longitudinal elastic-plastic impact on a two-layer composite rod with a fixed opposite end. The composite   rod consists of a soft layer (aluminum) and a hard layer (steel), with their position varying. The condition of the continuity of the particle velocity vector and the stress is met on the contact boundary of the rods. To describe the wave processes the grid-characteristic method is used which makes it possible to construct computational algorithms on the borders of the integration area and the interfaces correctly. The interaction of reflected and refracted stress waves at the interface of composite rods is analyzed.. The phenomena on the interface of composite rods are made more complicated by their interaction with the dynamics of changing both the applied external load and the stress waves reflected from the boundary surfaces. As a result of numerical studies we have shown the possibility of damages on the interface for an aluminum-steel composite rod and rapid decay of non-linear effects in the case of steel-aluminum. Positioning rods with specific mechanical characteristics in the order specified by the calculations, we found a possibility to control the level of dynamic loading of each individual element of the composite rod, and hence the operability of the whole composite rod.

About the authors

T. D. Karimbayev

Central Institute of Aviation Motors

Author for correspondence.

Doctor of Science (Engineering), Professor

Head of the Department of Composite Materials

Russian Federation

Sh. Mamayev

Moscow institute of Physics and Technology (State University)


Candidate of Science (Engineering)

Research assistant of the Department of Computational Mathematics

Russian Federation


  1. Erzhanov Zh.S., Karimbaev T.D., Bajteliev T.B. Volny naprjazhenij v odnorodnyh i neodnorodnyh sredah [Stress waves in homogeneous and nonhomogeneous media]. Almaty: Gylym Publ., 1998. 171 p.
  2. Karimbaev T.D., Mamaev Sh. Teorija techenija pri peremennyh skorostjah deformacij. Prikladnye zadachi mehaniki deformiruemogo tverdogo tela [Flow theory for variable deformation velocities]. Alma-Ata, 1989. P. 52-58.
  3. Godunov S.K. Uravnenija Matematicheskoj fiziki [Equations of mathematical physics]. Moscow: Nauka Publ., 1971. 416 p.
  4. Kukudzhanov V.N. Komp'juternoe modelirovanie deformirovanija, povrezhdaemosti i razrushenie neuprugih materialov i konstrukcij [Computer simulation of deformation, damage resistance and destruction of non-elastic materials and structures]. Moscow: Moscow Inst. of Phys. and Tech. St. Univ. Publ., 2008. 215 p.
  5. Turchak L.I. Osnovy chislennyh metodov [Foundations of numerical methods]. Moscow: Nauka Publ., 1987. 320 p.
  6. Laptev V.I., Trischin Yu.A. Increase of initial velocity and pressure in case of impact on an inhomogeneous obstacle // Journal of Applied Mechanics and Technical Physics. 1974. No.6. P.128-132.



Abstract: 3100

PDF (Russian): 1682




  • There are currently no refbacks.

Copyright (c) 2015 VESTNIK of the Samara State Aerospace University

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies