Study on response characteristics for forced vibrations of thin cylindrical shell
An analysis was made to study on response characteristics for forced vibrations of a clamp-free boundary condition under a radial harmonic excitation force or a radial impact excitation force, Firstly, a dynamic model of a thin cylindrical shell was constructed according to Love’s shell theory. Secondly, taking damping into account, the dynamic equations were solved based on modal superposition method and the modal coordinates vibration equations were acquired, so as to get the vibration response results when the cylindrical shell was subject to a radial harmonic excitation force or a radial impact excitation force. Finally, the variation of response amplitudes and phases was got in different locations of the cylindrical shell through a specific example, and the influence rules were compared when modal damping ratio and the excitation force value were different.
1. School of Mechanical Engineering and Automation, Northeast University, Shenyang 110819, China;
2. School of Mechanical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
Abstract： An analysis was made to study on response characteristics for forced vibrations of a clamp-free boundary condition under a radial harmonic excitation force or a radial impact excitation force, Firstly, a dynamic model of a thin cylindrical shell was constructed according to Love’s shell theory. Secondly, taking damping into account, the dynamic equations were solved based on modal superposition method and the modal coordinates vibration equations were acquired, so as to get the vibration response results when the cylindrical shell was subject to a radial harmonic excitation force or a radial impact excitation force. Finally, the variation of response amplitudes and phases was got in different locations of the cylindrical shell through a specific example, and the influence rules were compared when modal damping ratio and the excitation force value were different.
王宇1, 2， 罗忠1. 薄壁圆柱壳构件受迫振动的响应特征研究[J]. 振动与冲击, 2015, 34(7): 103-108.
Wang Yu 1, 2，Luo Zhong 1. Study on response characteristics for forced vibrations of thin cylindrical shell. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(7): 103-108.
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