Free vibration behaviour of helically wound cylindrical shells

• Published in: Composite structures Vol. 44; no. 1; pp. 55 - 62
• Main Authors: Sharma, C.B., Darvizeh, M., Darvizeh, A.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 1999; Elsevier Science
• Subjects: Applied sciences; Exact sciences and technology; Forms of application and semi-finished materials; Fundamental areas of phenomenology (including applications); Modal characteristics; Monoclinic; Physics; Polymer industry, paints, wood; Shell theory; Solid mechanics; Structural and continuum mechanics; Technology of polymers; Tubes; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Vibrations and mechanical waves; Monoclinic; Shell theory; Modal characteristics; Helical shape; Stratified material; Modal analysis; Equation of motion; Free vibration; Filament winding; Cylindrical shell; Revolution shell; Experimental study; Fourier series; Modeling; Composite material
• ISSN: 0263-8223; 1879-1085
• DOI: 10.1016/S0263-8223(98)00120-2

In this paper a modified exact analytical method is employed to study the vibration characteristics of high modulus cylindrical shells laminated of a composite material. Here the axial dependence of modal forms is chosen in the form of simple Fourier series. This choice is found to be greatly helpful in the study of the influence of boundary conditions on the various vibration characteristics of such structures. Transverse shear and rotary inertia terms are included in the analysis for a more reliable prediction of response characteristics in general for the composite shells. The effectiveness and the accuracy of the present analytical method are displayed by comparing the analytical frequencies obtained here with some previously published experimental as well as theoretical results. The two sets of results were found to be in good agreement.