Frequency-dependent orthotropic damping properties of Nomex honeycomb composites

Yong Zhou, Anna Liu, Yongzheng Xu, Yunli Guo, Xiaosu Yi, Yuxi Jia

Research output: Journal PublicationArticlepeer-review

2 Citations (Scopus)
2 Downloads (Pure)

Abstract

In this paper, the orthotropic damping behavior and mechanism of Nomex honeycomb composites are investigated. The needed specimen sizes for the measurement of the frequency-dependent transverse shear moduli (TSM) and fundamental damping coefficients of the honeycomb cores were analyzed at first. Then, the effects of cell side length and beam orientation on the orthotropic damping properties were explored. The results reveal that relatively high TSM (GLT) and damping values (ηWT) can be obtained by decreasing the cell side length without adding any additional weight. The analytical results of the damping mechanism indicate that the difference in the damping contributions of the interfacial phase to the honeycomb core in different directions leads to the orthotropic damping behavior of the honeycomb core. This study is helpful to guide the TSM measurement and structure design of honeycomb composites.

Original languageEnglish
Article number107372
JournalThin-Walled Structures
Volume160
DOIs
Publication statusPublished - Mar 2021

Keywords

  • Cell side length
  • Experimental/numerical method
  • Honeycomb composite
  • Orthotropic damping property
  • Transverse shear modulus

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering

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