Progressive damage analysis of composite structures using higher-order layer-wise elements

Nagaraj, MH, Reiner, Johannes, Vaziri, R, Carrera, E and Petrolo, M 2020, Progressive damage analysis of composite structures using higher-order layer-wise elements, Composites Part B: Engineering, vol. 190, pp. 1-11, doi: 10.1016/j.compositesb.2020.107921.

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Title Progressive damage analysis of composite structures using higher-order layer-wise elements
Author(s) Nagaraj, MH
Reiner, JohannesORCID iD for Reiner, Johannes orcid.org/0000-0001-8473-4201
Vaziri, R
Carrera, E
Petrolo, M
Journal name Composites Part B: Engineering
Volume number 190
Article ID 107921
Start page 1
End page 11
Total pages 11
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2020-06-01
ISSN 1359-8368
Keyword(s) CODAM2
GUF
Explicit damage analysis
Higher-order structural modelling
Summary © 2020 Elsevier Ltd The objective of the current work is the development of a numerical framework for the simulation of damage in composite structures using explicit time integration. The progressive damage is described using a Continuum Damage Mechanics (CDM) based material model, CODAM2, in which the damage initiation and progression are modelled using Hashin's failure criteria and crack-band theory, respectively. The structural modelling uses higher-order theories based on the Carrera Unified Formulation (CUF). The current work considers 2D-CUF models where Lagrange polynomials are used to represent the displacement field through the thickness of each ply, resulting in a layer-wise element model. Numerical assessments are performed on coupon-level specimens, and the results are shown to be in good agreement with reference numerical predictions and experimental data, thus verifying the current implementation for progressive tensile damage. The capability of the proposed framework in increasing the polynomial expansion order through the ply thickness, and its influence on the global behaviour of the structure in the damaged state, is demonstrated. The advantages of using higher-order structural models in achieving significant improvements in computational efficiency are highlighted.
DOI 10.1016/j.compositesb.2020.107921
Field of Research 09 Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30135826

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