An investigation of the Effect of Asymmetry on the Free Vibration Behavior of Sandwich Structure

Authors : Ufuk DEMİRCİOĞLU, Ali Suat YILDIZ, Mutlu Tarık ÇAKIR

Pages : 54-61

Doi:10.16984/saufenbilder.955314

View : 103 | Download : 10

Publication Date : 2022-02-28

Article Type : Research Paper

Abstract :This study presents a free vibration analysis of asymmetric sandwich structures comparatively. Sandwich structures were manufactured by the hand-layup vacuum bagging method. Symmetric and asymmetric sandwich structures were analyzed experimentally to evaluate the effect of asymmetry on the free vibration characteristic of sandwich structures. Free vibration analysis was performed by using VIBXPERT II under clamped-free boundary conditions. The frequency response function insert ignore into journalissuearticles values(FRF); is obtained from the modal test. Modal parameters of sandwich structures were obtained from analysis by curve fitting to FRF using Matlab. The effects of asymmetry on the natural frequency of the sandwich structures are investigated and results are comparatively presented. The finite element method insert ignore into journalissuearticles values(FEM); was also implemented by using COMSOL Multiphysics® for verifying the selected system parameters and analyzing the experimental results. By the experimental study the accuracy of the model being having proven, it also has potential for the investigations of vibration behavior of the various applications including asymmetric sandwich structures.
Keywords : asymmetric sandwich structure, free vibration analysis, modal analysis, sandwich structure

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