| Summary: | 碩士 === 國立成功大學 === 土木工程學系 === 102 === Composites possess light weight, high strength, high stiffness, corrosion resistance, low thermal conductivity and other superior characteristics. Composites is widely used in a variety of engineering structures. To avoid structures producing resonance phenomenon and to avoid materials exceeded the allowable limits, the natural frequency analysis of composites structures is essential topics.
In this study, using finite element analysis software ABAQUS to analyze laminated truncated conical shells’s fundamental frequency. Subjected to the different boundary conditions ,geometric shapes, the axial pressure, rotational speed. The Golden section method is employed to find the optimal fiber orientations and its corresponding maximum fundamental frequency in the composite laminated cylindrical shells.
Design a compressed rotating laminated truncated conical shell,which can avoid the incidence of resonance phenomena. Select the appropriate angle and geometry of the fiber to improve the fundamental frequency of laminated truncated conical shells. The research results are valuable to the industry.
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