Effect of delamination on the stochastic natural frequencies of composite laminates
Effect of delamination on the stochastic natural frequencies of composite laminates
The coupled effect of manufacturing uncertainty and a critical service-life damage condition (delamination) is investigated on the natural frequencies of laminated composite plates. In general, delamination is an unavoidable phenomenon in composite materials encountered often in real-life operating conditions. We have focused on the characterization of dynamic responses of composite plates considering source-uncertainty in the material and geometric properties along with various single and multiple delamination scenarios. A hybrid high dimensional model representation based uncertainty propagation algorithm coupled with layer-wise stochastic finite element model of composites is developed to achieve computational efficiency. The finite element formulation is based on Mindlin's theory considering transverse shear deformation. Numerical results are presented for the stochastic natural frequencies of delaminated composites along with a comprehensive deterministic analysis. Further, an inevitable effect of noise is induced in the surrogate based analysis to explore the effect of various errors and epistemic uncertainties involved with the system.
242-256
Mukhopadhyay, T.
e6d88364-3b92-4da8-a0b1-ee8a4fdeb6bf
Naskar, Susmita
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Karsh, P.K.
22c8fd0a-f4bc-44ab-bb9a-ce543101f658
Dey, S.
7938a3d9-1cf4-44c4-9e16-6fc8464d9c50
You, Z.
8eb65aaf-caa7-462c-a0ff-14fcfbe39294
1 December 2018
Mukhopadhyay, T.
e6d88364-3b92-4da8-a0b1-ee8a4fdeb6bf
Naskar, Susmita
5f787953-b062-4774-a28b-473bd19254b1
Karsh, P.K.
22c8fd0a-f4bc-44ab-bb9a-ce543101f658
Dey, S.
7938a3d9-1cf4-44c4-9e16-6fc8464d9c50
You, Z.
8eb65aaf-caa7-462c-a0ff-14fcfbe39294
Mukhopadhyay, T., Naskar, Susmita, Karsh, P.K., Dey, S. and You, Z.
(2018)
Effect of delamination on the stochastic natural frequencies of composite laminates.
Composites Part B: Engineering, 154 (12), .
(doi:10.1016/j.compositesb.2018.07.029).
Abstract
The coupled effect of manufacturing uncertainty and a critical service-life damage condition (delamination) is investigated on the natural frequencies of laminated composite plates. In general, delamination is an unavoidable phenomenon in composite materials encountered often in real-life operating conditions. We have focused on the characterization of dynamic responses of composite plates considering source-uncertainty in the material and geometric properties along with various single and multiple delamination scenarios. A hybrid high dimensional model representation based uncertainty propagation algorithm coupled with layer-wise stochastic finite element model of composites is developed to achieve computational efficiency. The finite element formulation is based on Mindlin's theory considering transverse shear deformation. Numerical results are presented for the stochastic natural frequencies of delaminated composites along with a comprehensive deterministic analysis. Further, an inevitable effect of noise is induced in the surrogate based analysis to explore the effect of various errors and epistemic uncertainties involved with the system.
Text
delamination_jcomb
- Accepted Manuscript
More information
Accepted/In Press date: 19 July 2018
e-pub ahead of print date: 26 July 2018
Published date: 1 December 2018
Identifiers
Local EPrints ID: 452061
URI: http://eprints.soton.ac.uk/id/eprint/452061
ISSN: 1879-1069
PURE UUID: a5c6e185-56dc-41f9-a8fc-5eb60fb6dcfd
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Date deposited: 10 Nov 2021 17:33
Last modified: 17 Mar 2024 04:07
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Contributors
Author:
T. Mukhopadhyay
Author:
P.K. Karsh
Author:
S. Dey
Author:
Z. You
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