Free vibration studies on skew sandwich plates

• Autorzy: Kumar Dhotre Pavan , Venkateshappa Chikko Srinivasa

Warianty tytułu

PL

Badania drgań swobodnych wibracji skośnych płyt warstwowych

• Języki publikacji: EN

Abstrakty

EN

The present work focuses on determining the fundamental frequencies of skew sandwich plates with face sheets considered to be classical thin plates, which are made of a graphite-epoxy material and an orthotropic core made of glass reinforced- epoxy using different boundary conditions. The fundamental frequencies were obtained using finite elements, which are validated with available literature results. The effects of the skew angle, ratio of the length to total thickness of the sandwich plate, and ratio of the thickness of the core to the face sheet on the fundamental frequency of skew sandwich plates were obtained. In addition, the effect of parameters such as the number of layers in the face sheet, the laminate stacking sequence and the fiber orientation angle on the fundamental frequencies of laminated skew sandwich plates was also ascertained. It was found that the CQUAD8 element yields better results than the CQUAD4 element in the present study. The fundamental frequencies were found to increase with an increasing skew angle. The variation in the fundamental frequency is negligible when there are a large number of layers in the face sheet.

Słowa kluczowe

EN

fundamental frequency; non-dimensional frequency parameter; skew sandwich plate; skew angle; antisymmetric laminate; fiber orientation angle

PL

częstotliwość podstawowa; bezwymiarowy parametr częstotliwości; skośna płyta warstwowa; kąt skosu; laminat antysymetryczny; kąt orientacji włókien

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2020
• Tom: R. 20, nr 3-4
• Strony: 118--127
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Kumar Dhotre Pavan

• Department of Mechanical Engineering, GM Institute of Technology, Visvesvaraya Technological University, Belagavi, India

autor

Venkateshappa Chikko Srinivasa

• Department of Mechanical Engineering, GM Institute of Technology, Visvesvaraya Technological University, Belagavi, India

Bibliografia

• [1] Lee L.J., Fan Y.J., Bending and vibration analysis of composite sandwich plates, Comput. Struct. 1996, 60(1), 103-112.
• [2] Chakrabarti A., Sheikh A.H., Vibration of laminate-faced sandwich plate by a new refined element, J. Aerosp. Eng. 2004, 17(3), 123-134.
• [3] Belarbi M.O., Tati A., Ounis H., Khechai A., On the free vibration analysis of laminated composite and sandwich plates: A layerwise finite element formulation, Lat. Am. J. Solids Struct 2017, 14, 2265-2290.
• [4] Ajay K.G., Rakesh K.K., Kant K., Free vibration of skew. fiber-reinforced composite and sandwich laminates using a shear deformable finite element model, J. Sandwich Struct. Mater. 2006, 8, 33-54.
• [5] Nayak A.K., Moy S.S.J., Shenoi R.A., Free vibration analysis of composite sandwich plates based on Reddy’s higher-order theory, Composites, Part B 2002, 33, 505-519.
• [6] Chalak H.D., Anupam C., Abdul H.S., Mohammad A.I., C0 FE model based on HOZT for the analysis of laminated soft-core skew sandwich plates: Bending and vibration, Appl. Math. Model 2014, 38, 1211-1223.
• [7] Kapuria S., Kulkarni S.D., Free vibration analysis of composite and sandwich plates using an improved discrete Kirchhoff quadrilateral element based on third-order zigzag theory, Comput. Mech. 2008, 42, 803-824.
• [8] Wang X., Liang X., Free vibration of soft-core sandwich panels with general boundary conditions by harmonic quadrature element method, Thin Walled Struct. 2017, 113, 253-261.
• [9] Yuan W.X., Dawe D.J., Free vibration of sandwich plates with laminated faces, Int. J. Numer. Meth. Engng 2002, 54,195-217.
• [10] Pavan K., Srinivasa C.V., Free vibration studies on skew sandwich plates by FEM, International Conference on Computational Engineering and Material Science, IOP Conf. Ser.: Mater. Sci. Eng. 2020, 925, 012024.
• [11] Pavan K., Srinivasa C.V., On buckling and free vibration studies of sandwich plates and cylindrical shells: A review, J. Thermoplast, Compos. Mater. 2018, 33(5), 673-724.
• [12] Park T., Lee S.Y., Seo J.W., Voyiadjis G.Z., Structural dynamic behavior of skew sandwich plates with laminated composite faces, Composites 2008, Part B, 39, 316-326.
• [13] Kanematsu H.H., Hirano Y., Iyama H., Bending and vibration of CFRP-faced rectangular sandwich plates, Comp. Struct. 1988, 10, 145-163.
• [14] Ibrahim M., Rizk M.N.F., Farah A., Dynamic analysis of unbalanced anisotropic sandwich plates, J. Eng. Mech. Division. 1981, 107(2), 405-418.
• [15] Wang C.M., Ang K.K., Yang L., Free vibration of skew sandwich plates with laminated facings, J. Sound and Vib. 2000, 235(2), 317-340.