Global sensitivity analysis of expensive models using sparse grids with applications to laminated composite structure
Four methods for global sensitivity analysis are studied with respect to their applicability in the finite element analysis of composite structures: (1) sensitivities based on the variance conditional expectation involving experimental design, (2) Morris' elementary effects method (including
recent improvements to effective trajectory selection), (3) Sobol's main and total sensitivity indices, and (4) the root mean square of approximate derivatives at sampled points. The sensitivities of the first ten natural frequencies to the composite material properties as well as to the ply
stack are determined. The methods are compared and an assessment of their applicability is made in the case of a fairly large number (d > 25) of uncertain parameters.
Document Type: Research Article
Affiliations: Daimler AG
Publication date: 01 November 2014
NCEJ is a peer reviewed Technical journal published every two months. The papers published in NCEJ cover general topics related to noise control engineering, ranging from fundamental research to applied case studies and histories.
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