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Response Variability of Laminated Composite Plates with Random Elastic Modulus  

Noh, Hyuk-Chun (세종대학교 토목환경공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.21, no.4, 2008 , pp. 335-345 More about this Journal
Abstract
In this study, we suggest a stochastic finite element scheme for the probabilistic analysis of the composite laminated plates, which have been applied to variety of mechanical structures due to their high strength to weight ratios. The applied concept in the formulation is the weighted integral method, which has been shown to give the most accurate results among others. We take into account the elastic modulus and in-plane shear modulus as random. For individual random parameters, independent stochastic field functions are assumed, and the effect of these random parameters on the response are estimated based on the exponentially varying auto- and cross-correlation functions. Based on example analyses, we suggest that composite plates show a less coefficient of variation than plates of isotropic and orthotropic materials. For the validation of the proposed scheme, Monte Carlo analysis is also performed, and the results are compared with each other.
Keywords
response variability; stochastic finite element method; laminated composite plate; weighted integral method; monte carlo analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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