Abstract

The effect of different types of stiffeners on the cylindrical shell structure is presented. The stiffened shell models are examined under action of static and dynamic excitations. Finite element method for the different stiffened cylindrical steel shell have been created by considering the helix angles and height of stiffeners, and a cantilever supported models are used. Additionally, the models are assumed to have a constant mass which is (4 kg). All structure models have examined under action of static, harmonic and transient loads. Also the dynamic properties (natural frequencies) are computed for each FEMs. A concentrated load of the magnitude of (100 N) in three directions is used in these structural analyses (static, harmonic and transient). This force is applying to the upper edge which is opposite the clamping edge. The analyses, the best helix angle occurs at stiffener angle (90o) and the best height of stiffener is (2 cm) and other analysis is (6.25 cm).A comparison between experimental work of [ Bagheri and Jafari (2006)] and numerical part of the resent work has shown a small percentage error.

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The article was added to IASJ on 2020-02-24

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