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

X-Y. Zhou, P. D. Gosling, Zahur Ullah, L. Kaczmarczyk, C. J. Pearce

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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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.
Original languageEnglish
Title of host publicationUnknown Host Publication
PublisherCardiff University
Pages261-264
Number of pages4
Publication statusAccepted/In press - 31 Mar 2016
Event24th UK Conference of the Association for Computational Mechanics in Engineering (ACME) - University of Cardiff, Cardiff, UK
Duration: 31 Mar 2016 → …

Conference

Conference24th UK Conference of the Association for Computational Mechanics in Engineering (ACME)
Period31/03/16 → …

Keywords

  • Composite
  • hygro-thermal effect
  • computational homogenization
  • durability
  • reliability

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    Zhou, X-Y., Gosling, P. D., Ullah, Z., Kaczmarczyk, L., & Pearce, C. J. (Accepted/In press). Multi-scale finite element based time-dependent reliability analysis for laminated fibre reinforced composites. In Unknown Host Publication (pp. 261-264). Cardiff University. https://acme2016.sciencesconf.org/resource/page/id/25