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《Journal of Vibration and Shock》 2015-22
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Free vibration of joined and orthogonally stiffened cylindrical-spherical shells

LI Zheng-liang;HU Hao;YU Wei;College of Civil Engineering,Chongqing University;  
The free vibration of a joined,smooth and orthogonally stiffened cylindrical-spherical shell under various boundary conditions was studied. Based on the simplification of the joined part,the spherical shell is of free boundary condition and the cylindrical shell is of simply supported boundary condition. The Rayleigh-Ritz method was applied to solve the natural frequencies of the structure according to the Flügge's thin shell theory. The natural frequencies were calculated and compared with those by the finite element software ANSYS to confirm the applicability and validity of the simplification. The effects of the shallowness of the spherical shell and the length-to-radius ratio of the joined shell on the free vibrational behavior of the joined structure were investigated. The results indicate that as the semi-angle Φ of the sphere increases,the natural frequencies decrease. As the length-to-radius ratio L / Rcincreases,the influence of the semiangle Φ of the sphere on the natural frequencies decreases,the natural frequencies decrease gradually and their reducing magnitude descends.
【Fund】: 国家自然科学基金项目(51278511)
【CateGory Index】: O323
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【References】
Chinese Journal Full-text Database 3 Hits
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【Co-references】
Chinese Journal Full-text Database 10 Hits
1 TANG Yuhang;CHEN Zhijian;MEI Zhiyuan;SUN Jianlian;Department of Naval Architecture Engineering,Naval University of Engineering;State Grid Bengbu Power Supply Company;;A method based on numeral calculation and experiment for determination of modal damping[J];振动与冲击;2017-04
2 CHEN Xu-dong;YE Kang-sheng;School of Naval Architecture and Civil Engineering,Jiangsu University of Science and Technology;Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Department of Civil Engineering,Tsinghua University;;Free vibration analysis of moderately thick elliptical shells using the dynamic stiffness method[J];振动与冲击;2016-06
3 LI Zheng-liang;HU Hao;YU Wei;College of Civil Engineering,Chongqing University;;Free vibration of joined and orthogonally stiffened cylindrical-spherical shells[J];振动与冲击;2015-22
4 LIU Xiao-wan;LIANG Bin;LI Rong;XU Hong-yu;ZHANG Wei;Civil Engineering School, Henan University of Science and Technology;Department of Mechanical Engineering, Kyushu Institute of Technology;;Effect of Stiffening Parameters on Vibration Characteristics of Fluid-filled Cylindrical Shells with Ring-stiffener[J];船舶力学;2015-03
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1 CHEN Jin-xiao;LIANG Bin;Civil Engineering School, Henan University of Science and Technology;;Study on the vibration of functionally graded material cylindrical shells under elastic boundary conditions[J];船舶力学;2017-07
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