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Uncertainty analysis based on sensitivity applied to angle-ply composite structures

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  • Conceição António, Carlos
  • Hoffbauer, Luísa N.

Abstract

This article describes a finite element-based formulation for the statistical analysis of the response of stochastic structural composite systems whose material properties are described by random fields. A first-order technique is used to obtain the second-order statistics for the structural response considering means and variances of the displacement and stress fields of plate or shell composite structures. Propagation of uncertainties depends on sensitivities taken as measurement of variation effects. The adjoint variable method is used to obtain the sensitivity matrix. This method is appropriated for composite structures due to the large number of random input parameters. Dominant effects on the stochastic characteristics are studied analyzing the influence of different random parameters. In particular, a study of the anisotropy influence on uncertainties propagation of angle-ply composites is carried out based on the proposed approach.

Suggested Citation

  • Conceição António, Carlos & Hoffbauer, Luísa N., 2007. "Uncertainty analysis based on sensitivity applied to angle-ply composite structures," Reliability Engineering and System Safety, Elsevier, vol. 92(10), pages 1353-1362.
    • Handle: RePEc:eee:reensy:v:92:y:2007:i:10:p:1353-1362
    DOI: 10.1016/j.ress.2006.09.006
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    References listed on IDEAS

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    1. Wu, Y-T. & Mohanty, Sitakanta, 2006. "Variable screening and ranking using sampling-based sensitivity measures," Reliability Engineering and System Safety, Elsevier, vol. 91(6), pages 634-647.
    2. Ahammed, Mukshed & Melchers, Robert E., 2006. "Gradient and parameter sensitivity estimation for systems evaluated using Monte Carlo analysis," Reliability Engineering and System Safety, Elsevier, vol. 91(5), pages 594-601.
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    Cited by:

    1. Parviz, Hadi & Fakoor, Mahdi, 2020. "Free vibration of a composite plate with spatially varying Gaussian properties under uncertain thermal field using assumed mode method," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 559(C).
    2. Sobey, A.J. & Blake, J.I.R. & Shenoi, R.A., 2013. "Monte Carlo reliability analysis of tophat stiffened composite plate structures under out of plane loading," Reliability Engineering and System Safety, Elsevier, vol. 110(C), pages 41-49.
    3. Whiteside, M.B. & Pinho, S.T. & Robinson, P., 2012. "Stochastic failure modelling of unidirectional composite ply failure," Reliability Engineering and System Safety, Elsevier, vol. 108(C), pages 1-9.

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