Anisotropic hyperelastic constitutive modeling of in-plane finite deformation responses of commercial composite hexagonal honeycombs

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Authors
Shahverdi Moghaddam, Hooman
Keshavanarayana, Suresh R.
Yang, Chihdar Charles
Horner, Allison L.
Advisors
Issue Date
2021-02-18
Type
Article
Keywords
Hexagonal honeycombs , Homogenization , Anisotropic hyperelastic modeling , In-plane deformation , Nonlinear response
Research Projects
Organizational Units
Journal Issue
Citation
Shahverdi Moghaddam, H., Keshavanarayana, S. R., Yang, C., & Horner, A. L. (2021). Anisotropic hyperelastic constitutive modeling of in-plane finite deformation responses of commercial composite hexagonal honeycombs. Journal of Sandwich Structures and Materials, doi:10.1177/1099636221993860
Abstract

This research presents the adaptation of an anisotropic hyperelastic constitutive model for predicting the experimentally observed in-plane, orthotropic, bi-modular and nonlinear-elastic responses of a commercial adhesively bonded HRP-C fiberglass/phenolic hexagonal honeycomb core. The hyperelastic constitutive model is evaluated under simple states of loading using single-element finite element analysis. The predictions of the model, including stress-strain behavior, Poisson effects, and strain energy densities, are compared with test data for the in-plane uniaxial tension/compression responses of the honeycomb core as well as the single-element model with a linear orthotropic constitutive model to highlight the effectiveness of the hyperelastic model at high strain levels. Good agreement is observed between the model predictions and test data. Tension tests in ribbon and transverse directions with the full-scale honeycomb core are also simulated to ensure the suitability of the single element model for simulations of the simple loading cases and preliminary validation process.

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Publisher
SAGE Publications
Journal
Book Title
Series
Journal of Sandwich Structures and Materials;
PubMed ID
DOI
ISSN
1099-6362
1530-7972
EISSN