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Numerical Methods for Determining Stiffness Properties of a Bar Cross-Section

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Cybernetics and Systems Analysis Aims and scope

Abstract

This paper considers some aspects of determining stiffness properties of cross-sections of bar elements and modeling the stress-strain states of bar systems. A method is proposed to find stresses based on nonlinear “stress-strain” dependencies. When numerically determining stiffness properties of a cross-section, a nonlinear analysis of a given collection of forces was performed. Using the method for performing nonlinear analysis, which is implemented in the software package “LIRA-SAPR,” the tangent and secant stiffness properties are determined. The methods proposed for determining and modeling stiffness properties allow to more precisely specify characteristics of nonlinear strain in materials and to apply them to elements of the cross-sections being designed.

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Authors and Affiliations

  1. LLC “LIRA-SAPR”, Kyiv, Ukraine

    O. S. Gorodetsky & Y. B. Filonenko

  2. National Aviation University, Kyiv, Ukraine and LLC “LIRA-SAPR”, Kyiv, Ukraine

    M. S. Barabash

Authors
  1. O. S. Gorodetsky
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  2. M. S. Barabash
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  3. Y. B. Filonenko
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Corresponding author

Correspondence to M. S. Barabash.

Additional information

Translated from Kibernetika i Sistemnyi Analiz, No. 2, March–April, 2019, pp. 180–187.

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Gorodetsky, O.S., Barabash, M.S. & Filonenko, Y.B. Numerical Methods for Determining Stiffness Properties of a Bar Cross-Section. Cybern Syst Anal 55, 329–335 (2019). https://doi.org/10.1007/s10559-019-00138-3

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  • DOI: https://doi.org/10.1007/s10559-019-00138-3

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