Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate

Osman Yiğid; Murat Şen

doi:10.17798/bitlisfen.1745184

Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate

Abstract

This study investigated the dynamic properties of a spherical sandwich composite structure made of carbon fiber face sheets and a Nomex honeycomb core. The structure was produced using the hand lay-up method. The results from Experimental Modal Analysis (EMA) and the numerical model created in ANSYS showed high consistency. The natural frequency difference was only 0.73% for the second mode, with the largest discrepancy of 6.5% was observed in the first mode. These differences are thought to be related to structural variations from the manufacturing process, such as resin distribution, carbon fiber fabric stacking, and air voids and the experimental challenges such as double hit errors, measurement resolutions related to force sensor and accelerometer and environmental noise. The vibration damping capability of the sandwich structure was investigated. Some modes exhibited high damping, while others had relatively lower values. The highest and the lowest damping ratios were obtained as 0.83% for the third mode and 0.23% for the fourth mode. A numerical equivalent model of the structure was created in ANSYS to determine its natural frequencies and vibration modes, confirming its effectiveness in modeling complex structures.

Keywords

References

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Details

Primary Language

English

Subjects

Dynamics, Vibration and Vibration Control, Machine Theory and Dynamics

Journal Section

Research Article

Authors

Osman Yiğid
0000-0002-1798-1250
Türkiye

Murat Şen ^*
0000-0002-3063-5635
Türkiye

Publication Date

September 30, 2025

Submission Date

July 17, 2025

Acceptance Date

September 27, 2025

Published in Issue

Year 2025 Volume: 14 Number: 3

DOI

https://doi.org/10.17798/bitlisfen.1745184

IZ

https://izlik.org/JA79RA24HJ

Cite

RIS / Bibtex

APA

Yiğid, O., & Şen, M. (2025). Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, 14(3), 1961-1979. https://doi.org/10.17798/bitlisfen.1745184

AMA

1.Yiğid O, Şen M. Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi. 2025;14(3):1961-1979. doi:10.17798/bitlisfen.1745184

Chicago

Yiğid, Osman, and Murat Şen. 2025. “Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate”. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi 14 (3): 1961-79. https://doi.org/10.17798/bitlisfen.1745184.

EndNote

Yiğid O, Şen M (September 1, 2025) Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi 14 3 1961–1979.

IEEE

[1]O. Yiğid and M. Şen, “Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate”, Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, vol. 14, no. 3, pp. 1961–1979, Sept. 2025, doi: 10.17798/bitlisfen.1745184.

ISNAD

Yiğid, Osman - Şen, Murat. “Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate”. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi 14/3 (September 1, 2025): 1961-1979. https://doi.org/10.17798/bitlisfen.1745184.

JAMA

1.Yiğid O, Şen M. Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi. 2025;14:1961–1979.

MLA

Yiğid, Osman, and Murat Şen. “Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate”. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, vol. 14, no. 3, Sept. 2025, pp. 1961-79, doi:10.17798/bitlisfen.1745184.

Vancouver

1.Osman Yiğid, Murat Şen. Experimental and Numerical Modal Analysis of Nomex Honeycomb Core Composite Sandwich Spherical Plate. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi. 2025 Sep. 1;14(3):1961-79. doi:10.17798/bitlisfen.1745184

Cited By

Advances in the thermal properties of Nomex honeycomb composites

Journal of Engineering and Applied Science

https://doi.org/10.1186/s44147-026-01054-y