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 language | English |
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Title of host publication | Unknown Host Publication |
Publisher | Cardiff University |
Pages | 261-264 |
Number of pages | 4 |
Publication status | Accepted/In press - 31 Mar 2016 |
Event | 24th UK Conference of the Association for Computational Mechanics in Engineering (ACME) - University of Cardiff, Cardiff, UK Duration: 31 Mar 2016 → … |
Conference
Conference | 24th UK Conference of the Association for Computational Mechanics in Engineering (ACME) |
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Period | 31/03/16 → … |
Keywords
- Composite
- hygro-thermal effect
- computational homogenization
- durability
- reliability