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Design of scaled model for dynamic characteristics of stiffened cylindrical shells based on equivalent similar method

Published online by Cambridge University Press:  05 April 2019

L. L. Zhou Open the ORCID record for L. L. Zhou [Opens in a new window]  and
D. K. Li
L. L. Zhou*
Affiliation:
National University of Defense Technology, Hunan, China
D. K. Li
Affiliation:
National University of Defense Technology, Hunan, China
*
*[email protected]
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Abstract

Scaled model test is an effective means to verify the design of a stiffened cylindrical shell. However, there is a problem of similarity distortion by use of the traditional dimensional analysis to design scaled models. In this present study, an equivalent similar method is proposed to solve the problem. The method is applied to an axial stiffened cylindrical shell, and the equivalent criteria and scaling laws satisfying the equivalent similarity of global bending mode are derived and verified by numerical examples. The results indicate that the similarity distortion caused by practical conditions for the stiffened cylindrical shell can be solved and the parameters of scaled model can be designed more freely with the proposed equivalent similar method.

Keywords

AerodynamicsSimilitude theoryScaled modelStiffened cylindrical shell
Type
Research Article
Information
The Aeronautical Journal , Volume 123 , Issue 1261 , March 2019 , pp. 398 - 415
Copyright
© Royal Aeronautical Society 2019 

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