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Rotational and ply-level uncertainty in response of composite shallow conical shells / S. Dey; T. Mukhopadhyay; H. Haddad Khodaparast; P. Kerfriden; S. Adhikari; Sondipon Adhikari; Hamed Haddad Khodaparast

Composite Structures, Volume: 131, Pages: 594 - 605

Swansea University Authors: Sondipon, Adhikari, Hamed, Haddad Khodaparast

Abstract

This paper presents the quantification of rotational and ply level uncertainty of random natural frequency for laminated composite conical shells by using surrogate modeling approach. The stochastic eigenvalue problem is solved by using QR iteration algorithm. Sensitivity analysis is carried out to...

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Published in: Composite Structures
ISSN: 0263-8223
Published: 2015
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa22148
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Abstract: This paper presents the quantification of rotational and ply level uncertainty of random natural frequency for laminated composite conical shells by using surrogate modeling approach. The stochastic eigenvalue problem is solved by using QR iteration algorithm. Sensitivity analysis is carried out to address the influence of different input parameters on the output natural frequencies. The sampling size and computational cost is reduced by employing the present approach compared to direct Monte Carlo simulation. The stochastic mode shapes are also depicted for a typical laminate configuration. Statistical analysis is presented to illustrate the results and its performance.
Keywords: Rotational uncertainty, Central composite design method, Natural frequency, Shallow conical shell, Sensitivity analysis, Stochastic mode shapes
College: College of Engineering
Start Page: 594
End Page: 605