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Multi-scale finite element based time-dependent reliability analysis for laminated fibre reinforced composites.

Zhou, X-Y., Gosling, P. D., Ullah, Zahur, Kaczmarczyk, L. and Pearce, C. J. (2016) Multi-scale finite element based time-dependent reliability analysis for laminated fibre reinforced composites. In: 24th UK Conference of the Association for Computational Mechanics in Engineering (ACME), University of Cardiff, Cardiff, UK. University of Cardiff, Cardiff, UK. 4 pp. [Conference contribution]

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URL: https://acme2016.sciencesconf.org/resource/page/id/25

Abstract

The objective of this paper is to propose a time-dependent reliability analysis method to investigate the durabil- ity of fibre reinforced polymer composites. A stochastic multi-scale finite element method, which is based on computational homogenization and perturbation technique, is adopted to propagate uncertainties in both micro- and macro-scale parameters. The influence of water absorption and heat conduction and the induced degradation of mechanical properties, which is estimated through a hygro-thermo-mechanical model that is integrated into the stochastic multi-scale finite method, is then studied in the framework of time-variant reliability analysis. It is shown that the problem reduces to a sequence of time-independent problems that can be solved using the first-order reliability method. A numerical study is carried out to demonstrate the applicability of the proposed method, and the evolution in time of the probability of failure is computed.

Item Type:Conference contribution (Paper)
Keywords:Composite; hygro-thermal effect; computational homogenization; durability; reliability
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
ID Code:38583
Deposited By: Dr Zahur Ullah
Deposited On:19 Sep 2017 13:16
Last Modified:17 Oct 2017 16:31

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