Volume : 7, Issue : 2, FEB 2021

FINITE ELEMENT VIBRATION ANALYSIS OF SANDWICH PLATE

*PIYUSH SINGH, NARENDRA JAISWAL, ASHISH DAKSH

Abstract

This research work focuses on free vibration analysis of sandwich composite plates using finite element vibration methods. The finite element formulations are developed based on the First Order Shear Deformation Theory (FSDT) considering layer wise FSDT for each of the three sandwich layers. Displacement equations for core are linearly interpolated between the face plates using continuity of the displacement fields.

A sandwich plate is fabricated from jute fiber honeycomb core and glass fiber face plates to study the vibration response. Hand layup technique is used to fabricate the composite plate. The vibration responses are acquired to study the free vibration behavior of composite plates. Experimental results are analyzed and are compared with analytical solution. Comparable results are obtained, thus indicating the accuracy of the formulation. Findings of this study provide useful insights and will be very helpful for further studies in vibration analysis of sandwich composite plates.

Keywords

FEM, FSDT, MODE SHAPE, SANDWICH STRUCTURE, NATURAL FREQUENCY, COMPOSITE MATERIAL.

Article : Download PDF

Cite This Article

Article No : 8

Number of Downloads : 56

References

  1. K. H. Ha, 'Finite element analysis of sandwich construction: a critical review', Proceedings of the First International Conference on Sandwich Constructions, Stockholm, Sweden, EMAS, UK. (1989)
  2. Bose P, Reddy JN. ‘Analysis of composite plates using various plate theories. Part Formulation and analytical solutions’, Struct. Engng. Mech.; 6(6):583–612, (1998)
  3. Bose P, Reddy JN. ‘Analysis of composite plates using various plate theories. Part 2. Finite element model and numerical results’, Struct. Engng Mech; 6(7):727–46, (1998)
  4. Yang PC, Norris CH, Stavsky Y. ‘Elastic wave propagation in heterogeneous plates’, Int J Solids Struct 1966; 2: 665–84.
  5. E. Reissner, ‘On bending of elastic plates’, Q. appl. Math. 5, 5548 (1947)
  6. E. Reissner, ‘Finite deflections of sandwich plates’, J. Aeronauf. Sci. July, 43540 (1948)
  7. B. D. Liaw and R. W. Little, ‘Theory of bending multilayer sandwich plates’, AZAA J. 5,301-304 (1967)
  8. J. J. Azar, ‘Bending theory of multilayer orthotropic sandwhich plates’, AZAA J. 6, 21662169 (1968)
  9. J. J. Azar, ‘Bending theory of multilayer orthotropic sandwhich plates’, AZAA J. 6, 21662169 (1968)
  10. T. P. Khatua and Y. K. Cheung, ‘Bending and vibration of sandwich beams and plates’, Inr. J. numer. Merh.Engng 6, 1 l-24 (1973)
  11. D. J. O’Connor, ‘A finite element package for the analysis of sandwich construction’, mpos: Struct. 8, 143-161 (1987)
  12. H. H. ‘Kandmatsu, Y. Hirano and H. Iyama, ‘Bending and vibration of CFRP- faced rectangular sandwich plates’, Compos. Strucf. 10, 145-163 (1988)