| The in-depth contents | |
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| Publication year | 1993 |
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| Title | STUDY OF VIBRATION CHARACTERISTICS OF A CABLE-NET STRUCTURE - DAMPING CHARACTERISTICS - |
| Author | Tsuyoshi ARITAKE,Kazuo ISHII |
| Summary |
When Dynamic responses of structures are analyzed， some damping should be considered in analyses. In the paper ，therefore， damping characteristics of a cable-net structure and a suitable method of the dynamic analysis including damping are investigated. Damping factors are calculated by amplitude ratios of predominant components that are decided by analyzing waves of vibration experiments by Fourier analysis， and Damping matrices are computed by these predominant frequencies and damping factors. And then， dynamic responses of experiment models are analyzed by the non-linear analysis， considering to some proportional dampings. They have following characteristics. 1) Type of proportion to Mass matrix 2) Type of proportion to Stiffness matrix 3) Type of proportion to both of them， generally called "Rayleigh damping". As results of these analyses， waves of analyses considering to Rayleigh damping was the most suitable for waves of experiments of three types of proportional dampings. In this way， one of possibilities that waves of experiments were approximately calculated by dynamic analyses considering to some proportional damping was shown in the paper. For the future， the damping model which will be more suitable for damping characteristics of experiment waves will have needed to be investigated， analyzing waves of experiments. |