437 剛性マトリクスの固有値と固有ベクトルを利用したFRF感度解析(解析法2(最適化,動設計),OS-13 モード解析とその応用関連技術)

概要

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This paper presents a new approach for the sensitivity analysis of FRF. In the detail design stage of car body, the frequency response functions (FRFs) are used for the evaluation of the vibration performance, and the effective structure modification attenuating the FRF's magnitude is sought. For this purpose, in the presented approach, the concept of the stiffness eigenvalue and stiffness principal axis is introduced. The stiffness properties of a component structure are simplified as a set of independent springs where the stiffness eigenvalue represents the spring constant and the stiffness principal axis does the corresponding deformation mode. The proposed approach is applied to a car body sensitivity analysis for the demonstration.
社団法人日本機械学会の論文
2004-09-27