Вип. 92

Постійний URI для цього зібранняhttps://repositary.knuba.edu.ua/handle/987654321/226

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20143

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Ключові словаsearch.filters.applied.operator.equals: search.filters.subject.the department building mechanics

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  • Документ
    Modeling of nonlinear deformation and buckling of elastic inhomogeneous shells
    (КНУБА, 2014) Bazhenov, V. A.; Solovei, N. A.; Krivenko, O. P.
    The paper outlines the fundamentals of the method of solving static problems of geometrically nonlinear deformation, buckling, and postbuckling behavior of thin thermoelastic inhomogeneous shells with complex-shaped mid-surface, geometrical features throughout the thickness, and multilayer structure under complex thermomechanical loading. The method is based on the geometrically nonlinear equations of three-dimensional thermoelasticity and the moment finiteelement scheme. The method is justified numerically. Comparing solutions with those obtained by other authors and by software LIRA and SCAD is conducted.
  • Документ
    Influence of system stiffness parameters at contact softness in vibroimpact system
    (КНУБА, 2014) Bazhenov, V. A.; Pogorelova, O. S.; Postnikova, T. G.
    The possibility of contact character changing by system parameters changing is researching. It is investigated the contact between two bodies in two-degree-of-freedom vibroimpact system. We show which parameters changing can transform the rigid impact in system into the soft one. In the main these parameters are the Young’s modulus and geometrical characteristics of the contact zone for both bodies.
  • Документ
    An estimation of residual lifetime of spatial structural elements under continual fracture condition
    (КНУБА, 2014) Bazhenov, V. A.; Gulyar, O. I.; Pyskunov, S. O.
    The techniques of modeling of continual fracture process for space circular and prismatic bodies under prolonged load condition and some results of determining of the estimated lifetime (up to local loss of material bearing capacity) and the residual (additional) lifetime (time of continual fracture zone growth) is presented in this paper. The Kachanov-Rabotnov’s scalar damage parameter to describe the continual fracture of the material and the semianalytic finite element method (SFEM) as numerical method of boudary problem solution is used. It‘s shown, that the value of residual lifetime could be differ significantly for different loading condition and object configuration.