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Dynamic Buckling Analysis of Ductile Damage Evolution for Thin Shell With Lemaitre’s Model

Author(s):


Medium: journal article
Language(s): English
Published in: Civil Engineering Journal, , n. 3, v. 10
Page(s): 835-846
DOI: 10.28991/cej-2024-010-03-012
Abstract:

Thin-shell structures are used in several fields of construction and are often exposed to severe dynamic environments, making them susceptible to dynamic instabilities. These instabilities are typically preceded by varying degrees of damage to the shell, justifying the need to incorporate this behavior in the formulation of the finite elements used. The objective of this work is to evaluate the different dynamic instability criterion in the presence of damage, afterward, evaluate the influence of this behavior on the stability of shells subjected to the dynamic excitations. The methodology of this project is essentially numerical, based on the finite element method. We are asked to program the introduction of damaging behavior and Lemaitre’s model criteria in the DYNCOQ program developed locally. To examine the results, two examples extracted from the literature were presented. The first model aimed to confirm the proper functioning of the program and the convergence of the plasticity criterion (Lemaitre's model). As for the second model, it allows us to test the dynamic instability. A comparison was made with experimental data from previously published literature, revealing a strong agreement between the calculated and experimental results. The obtained results prove the utility of considering this behavior in the shell analysis. Doi: 10.28991/CEJ-2024-010-03-012 Full Text: PDF

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.28991/cej-2024-010-03-012.
  • About this
    data sheet
  • Reference-ID
    10776254
  • Published on:
    29/04/2024
  • Last updated on:
    29/04/2024
 
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