実部もしくは虚部のデータのみを用いた複素剛性の時間領域変換法

概要

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The author has studied the transform method of complex stiffness, which is strongly dependent on frequency, to the time domain. In this paper, new transform methods which use the real part data or the imaginary part data only are proposed. By applying them to example problems, it is confirmed that the accuracy of the proposed methods is almost high in both causal and noncausal cases. These methods can also be thought as a standby for the Hilbert transform because the undefined part is easily calculated by the recovering complex function from the obtained impulse response. The efficiency and the validity of the proposed methods are confirmed by applying it to example problems. Moreover, a model of the viscous boundary considering the hysteretic damping of the material in the time domain is shown using the proposed methods.
2007-02-28