Wavelet変換を用いた空力振動エネルギーの評価

概要

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It is important to estimate the vibration characteristic of structures for the wind resistantdesign or the seismic design. Especially, the influence of the damping characteristic has onthe vibration is large. In general, the Fourier analysis is used for the evaluation of thevibration characteristics. However, these methods are due to the statistical method based onthe stationary stochastic process, and attention is required to apply to nonstationaryphenomenon. Then, this paper proposes the technique for evaluating the work of externalforce, the increment of vibration energy and the dissipation of the structural energy from thegeneralization wind force and the building response by using the wavelet transform that iseffective to handle nonstationary phenomenon. Moreover, this technique was applied to thefield measurement result of using the square pillar elastic model, and the relation betweenthe work of the wind force and the vibration energy was shown.
一般社団法人日本風工学会の論文