246 周波数応答変化の類似性を基にした固有モードの分類による解析効率化手法

概要

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Observing each vibration mode is a basic and useful approach for automobile NVH in the booming noise frequency range. In the recent vibration analysis, the number of modes in the target frequency range increases as the finite element model reflects an actual automobile faithfully. In this case, it's difficult to examine individual mode, and it is required a lot of time to establish effective countermeasures. In this study, a practical method is proposed to raise the efficiency of analysis by grouping these modes into several types. The types are defined by the similarity of the effects of modifications that are made on noticed portions of the structure. The grouping method enables the analyst to effectively draw countermeasures for each group and reduces the analysis time.
社団法人日本機械学会の論文
2006-08-06