کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
806535 905360 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Uncertainty analysis based on sensitivity applied to angle-ply composite structures
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Uncertainty analysis based on sensitivity applied to angle-ply composite structures
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reliability Engineering & System Safety - Volume 92, Issue 10, October 2007, Pages 1353–1362
نویسندگان
, ,