RESEARCH PAPER
Modal Characterization of Sandwich Skew Plates
1
Research Scholar, Department of Mechanical Engineering, GM Institute of Technology, Davangere, Visvesvaraya Technological University, Jnana Sangama, VTU Main Rd, Machhe, Belagavi, Karnataka 590018, India
2
Head, Department of Mechanical Engineering, GM Institute of Technology, Davangere, Visvesvaraya Technological University, Jnana Sangama, VTU Main Rd, Machhe, Belagavi, Karnataka 590018, India
Submission date: 2021-03-14
Acceptance date: 2021-07-01
Online publication date: 2021-09-27
Publication date: 2021-09-01
Acta Mechanica et Automatica 2021;15(3):143-153
KEYWORDS
natural frequencynon-dimensional frequency parameter (Kf)antisymmetric laminatefiber orientation angleskew angle
ABSTRACT
The current work focuses on the experimental and finite element free vibration studies of laminated composite sandwich skew plates. The comparison was made between the experimental values obtained by the Fast Fourier transform (FFT) analyzer and a finite element solution obtained from CQUAD8 finite element of The MacNeal-Schwendler Corporation (MSC) / NASA STRucture Analysis (NASTRAN) software. The influence of parameters such as aspect ratio (AR) (a/b), skew angle (α), edge condition, laminate stacking sequence, and fiber orientation angle (θ°) on the natural frequencies of sandwich skew plates was studied. The values obtained by both the finite element and experiment approaches are in good agreement. The natural frequencies increase with an increase in the skew angle for all given ARs.
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| eISSN: | 2300-5319 |
| ISSN: | 1898-4088 |
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