FREE-VIBRATION OF PARTIALLY SUPPORTED CYLINDRICAL-SHELLS

The effects of detached base length on the natural frequencies and mod al shapes of cylindrical shell structures were investigated in this wo rk. Some of the important applications for this type of problem can be found in the cracked fan and rotor blades that can be idealized as pa rtially supported shells with varying unsupported lengths. A finite el ement model based on small deflection linear theory was developed to o btain numerical solutions for this class of problems. The numerical re sults were generated far shallow shells and some of the degenerate cas es are compared with other results available in the literature. The co mputations presented here involve a wide range of variables: material properties, aspect ratios, support conditions, and radius to base rati o. (C) 1995 John Wiley & Sons, Inc.