FREE VIBRATION ANALYSIS OF COMPOSITE FACE SANDWICH PLATE STRENGTHENS BY Al2O3 AND SiO2 NANOPARTICLES MATERIALS

被引：0
作者：
Al-Shablle M. [1 ]
Njim E.K. [2 ]
Jweeg M.J. [3 ]
Al-Waily M. [1 ]
机构：
[1] Department of Mechanical Engineering, Faculty of Engineering, University of Kufa
[2] Ministry of Industry and Minerals, State Company for Rubber and Tires Industries
[3] Al-Farahidi University, College of Technical Engineering
来源：
Diagnostyka | 2023年 / 24卷 / 02期
关键词：
Analytical solution; Composite-face; Nanoparticles; Sandwich panel;
D O I：
10.29354/diag/162580
中图分类号：
学科分类号：
摘要：
The main novelty of the paper is that analytical, experimental, and numerical analyses are used to investigate the free vibration problem of a sandwich structure in which Nanocomposites skins (SiO2/epoxy and Al2O3/epoxy) at different densities are used as the face sheet. The volume fraction's of nanoparticle addition varies (0% to 2.5%). The present free vibration was derived based on Kirchhoff's theory and aspiration to obtain the natural frequency. The results show that in structures with SiO2 nanoparticles with a density of 1180 kg/m3 the optimum increase (VF = 2.5%) is 50% in Young's modulus and 22% in natural frequency, while at a density of 1210 kg/m3 is 56 % in Young's modulus and 24.5% in natural frequency. Furthermore, the same structures reinforced with Al2O3 Nano-particles show that at the density of 1180 kg/m3, the optimum (VF=2.5%) parentage increase in Young's modulus is 41% and 19% in natural frequency, while at the density of 1210 kg/m3 is 46% in Young's modulus and 21% in natural frequency. A numerical investigation was used to validate the obtained results of the analytical solution. The findings also show an acceptable convergence between analytical and numerical techniques with a maximum discrepancy not exceeding 3%. © 2023 by the Authors.
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