多自由度非線形振動系のノンパラメトリック同定法

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  • A nonparametric identification technique for nonlinear multi-degree-of-freedom vibratory systems.
  • タジユウド ヒセンケイ シンドウケイ ノ ノンパラメトリック ドウテイホウ

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In a previous paper, a new nonparametric method for the identification of nonlinear single-degree-of-freedom vibratory systems was presented. In this paper, the technique is generalized so that it can identify multi-degree-of freedom vibratory systems, among which are those with their restoring or damping forces dependent on both displacements and velocities. The main procedure of this technique is to divide the regions of displacements and/or velocities into small subdomains and express the restoring or damping forces by interpolating over each subdomain. Some numerical examples are given, and the technique is shown to be valid.

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