Journal of Aeronautical Engineering

Journal of Aeronautical Engineering

Free Vibration Analysis of Longitudinally Stiffened Cylindrical Shells with Different Types of Boundary Conditions Using Analytical and Experimental Methods

Document Type : Original Article

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Abstract
In this research, the free vibration analysis of cylindrical shells with longitudinal stiffeners, i.e. stringer with two methods of analytical and experimental for different boundary condition is investigated. Ritz method is applied in analytical solution while stiffeners treated as discrete elements. Also, in experimental method the modal testing is performed. Different types of simply supported, different types of clamped and also free boundary conditions are considered. Some analytical results for natural frequencies are compared with other’s experimental and analytical results, and hence with experimental results of this research, which showed good agreement. Furthermore, variations of natural frequencies, fundamental frequency and natural mode shapes for different types of boundary conditions are considered.
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