Theoretical research and experimental verification on vibration and acoustic similarity of stiffened cylindrical shells

DOI

10.2991/iceep-18.2018.40How to use a DOI?

Keywords

vibration, acoustics, similarity, siffened cylindrical shells.

Abstract

The employment of similitude theory to establish similarity among structural-acoustic systems can save considerable expense and time, if the proper scaling laws are found and validated. In this study necessary similarity conditions or scaling laws for dynamic analysis of stiffened cylindrical shell are developed through non-dimensionalizing the major variables in governing equations by Buckingham pi-theorem. In order to verify the similarity theory, two stiffened cylindrical shells, which are the model and prototype, are fabricated, and their frequency response functions (FRFs) of acceleration and sound pressure subjected to a random excitation are measured in a semi-anechoic chamber. Results show that FRFs of the model and prototype closely resemble each other compared throughout the frequency range and the scaling laws provide precise relationship between a full-scale prototype and its small-scale equivalent model.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bin Fang
AU  - Zhemin Jin
AU  - Hanqin Li
PY  - 2018/09
DA  - 2018/09
TI  - Theoretical research and experimental verification on vibration and acoustic similarity of stiffened cylindrical shells
BT  - Proceedings of the 2018 7th International Conference on Energy and Environmental Protection (ICEEP 2018)
PB  - Atlantis Press
SP  - 231
EP  - 237
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceep-18.2018.40
DO  - 10.2991/iceep-18.2018.40
ID  - Fang2018/09
ER  -