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Lookup NU author(s): Dr Xiaoyi Zhou,
Professor Peter Gosling
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The objective of this paper is to propose a time-dependent reliability analysis method to investigate the durability 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.
Author(s): Zhou X-Y, Gosling PD, Ullah Z, Pearce CJ, Kaczmarczyk L
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 24th UK Conferences of the Association for Computational Mechanics in Engineering
Year of Conference: 2016
Online publication date: 01/04/2016
Acceptance date: 02/03/2016