Uncertainty quantification of dry woven fabrics: A sensitivity analysis on material properties

A. B. Ilyani Akmar, T. Lahmer, S. P A Bordas, L. A A Beex, Timon Rabczuk

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Based on sensitivity analysis, we determine the key meso-scale uncertain input variables that influence the macro-scale mechanical response of a dry textile subjected to uni-axial and biaxial deformation. We assume a transversely isotropic fashion at the macro-scale of dry woven fabric. This paper focuses on global sensitivity analysis; i.e. regression- and variance-based methods. The sensitivity of four meso-scale uncertain input parameters on the macro-scale response are investigated; i.e. the yarn height, the yarn spacing, the yarn width and the friction coefficient. The Pearson coefficients are adopted to measure the effect of each uncertain input variable on the structural response. Due to computational effectiveness, the sensitivity analysis is based on response surface models. The Sobol's variance-based method which consists of first-order and total-effect sensitivity indices are presented. The sensitivity analysis utilizes linear and quadratic correlation matrices, its corresponding correlation coefficients and the coefficients of determination of the response uncertainty criteria. The correlation analysis, the response surface model and Sobol's indices are presented and compared by means of uncertainty criteria influences on MataBerkait-dry woven fabric material properties. To anticipate, it is observed that the friction coefficient and yarn height are the most influential factors with respect to the specified macro-scale mechanical responses.

Original languageEnglish
Pages (from-to)1-17
Number of pages17
JournalComposite Structures
Volume116
Issue number1
DOIs
Publication statusPublished - 2014 Jan 1

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ceramics and Composites

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