Eur. Phys. J. Plus (2022) 137: 583
https://doi.org/10.1140/epjp/s13360-022-02752-1

Regular Article

An analytical study of acoustic radiation characteristics of honeycomb sandwich structure in thermal environment

Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, 650093, Kunming, China

^c tianqi1900@126.com

Received: 28 February 2022
Accepted: 20 April 2022
Published online: 13 May 2022

Abstract

Honeycomb sandwich plate is one of the most widely used structural components in various industries. However, the research on its acoustic radiation performance needs further study. Based on that this paper presents an analytical method for investigating the acoustic radiation characteristics of honeycomb sandwich plate structure subjected to combined thermal and force excitation. According to the first order shear deformation theory (FSDT), the governing equations of sandwich plate structure in two typical graded thermal environments are established. By comparing with the numerical results calculated by commercial finite element software, the validity of the proposed theoretical model is verified. Finally, the influences of honeycomb core dimensions, mutual radiation resistances, material parameter and temperature distribution on acoustic radiation behavior of sandwich structure have been investigated. It has found that, for temperature field with heat flux source, when heat flux is increased and the temperature of bottom surface is fixed, the magnitudes of the SPL curves increase with the increase in heat flux but remain almost unchanged in the location of resonance peaks, but when heat flux is fixed and the temperature of bottom surface is increased, the resonance peaks of SPL curves move to lower frequency region with the increase in temperature, while the magnitudes of the SPL curves don’t change significantly.