Progressive failure analysis of postbuckled plates via mixed formulation
Riccardo Vescovini, Mohammad Reza Najafian Zadeh Najafabadi
download PDFAbstract. This paper presents a strategy for Progressive Failure Analysis (PFA) of laminated plates, including Variable Stiffness ones, based on the Ritz method. The formulation is developed using a mixed variational principle, where the unknowns are the stress function and the out-of-plane deflections. A linear degradation model is implemented to account for damage evolution. To ensure accurate predictions, emphasis is placed on the method’s ability to correctly handle the laminate’s elastic couplings. The iterative nature of this type of analysis is effectively managed due to the reduced number of degrees of freedom required. Exemplary results are reported, and comparisons with Abaqus results are provided to demonstrate the quality of the predictions.
Keywords
Progressive Failure Analysis, Mixed Formulation, Semi-Analytical Methods, Ritz Method, Elastic Couplings
Published online 8/10/2023, 9 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Riccardo Vescovini, Mohammad Reza Najafian Zadeh Najafabadi, Progressive failure analysis of postbuckled plates via mixed formulation, Materials Research Proceedings, Vol. 31, pp 29-37, 2023
DOI: https://doi.org/10.21741/9781644902592-4
The article was published as article 4 of the book Advanced Topics in Mechanics of Materials, Structures and Construction
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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