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Orientador(es)
Resumo(s)
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.
Descrição
Palavras-chave
Uncertainty propagation Sensitivity analysis First-order analysis Angle-ply composites
Contexto Educativo
Citação
Editora
Elsevier