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Strain Energy and Entropy Based Scaling of Buckling Modes

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU150461" target="_blank" >RIV/00216305:26110/23:PU150461 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.mdpi.com/1099-4300/25/12/1630" target="_blank" >https://www.mdpi.com/1099-4300/25/12/1630</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/e25121630" target="_blank" >10.3390/e25121630</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Strain Energy and Entropy Based Scaling of Buckling Modes

  • Original language description

    A new utilization of entropy in the context of buckling is presented. The novel concept of connecting the strain energy and entropy for a pin-ended strut is derived. The entropy of the buckling mode is extracted through a surrogate model by decomposing the strain energy into entropy and virtual temperature. This concept rationalizes the ranking of buckling modes based on their strain energy under the assumption of given entropy. By assigning identical entropy to all buckling modes, they can be ranked according to their deformation energy. Conversely, with identical strain energy assigned to all the modes, ranking according to entropy is possible. Decreasing entropy was found to represent the scaling factors of the buckling modes that coincide with the measurement of the initial out-of-straightness imperfections in IPE160 beams. Applied to steel plane frames, scaled buckling modes can be used to model initial imperfections. It is demonstrated that the entropy (scale factor) for a given energy roughly decreases with the inverse square of the mode index. For practical engineering, this study presents the possibility of using scaled buckling modes of steel plane frames to model initial geometric imperfections. Entropy proves to be a valuable complement to strain energy in structural mechanics.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10300 - Physical sciences

Result continuities

  • Project

    <a href="/en/project/GA23-04712S" target="_blank" >GA23-04712S: Importance of Stochastic Interactions in Computational Models of Structural Mechanics</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2023

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    ENTROPY

  • ISSN

    1099-4300

  • e-ISSN

  • Volume of the periodical

    25

  • Issue of the periodical within the volume

    12

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    17

  • Pages from-to

    1-17

  • UT code for WoS article

    001130972100001

  • EID of the result in the Scopus database

    2-s2.0-85180711511