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A COMPARISON OF SDOF AND GLOBAL MDOF MODAL ANALYSIS TECHNIQUES WHEN APPLIED TO A LIGHTLY-DAMPED LINEAR STRUCTURE

机译：SDOF和全局MDOF模态分析技术应用于轻型线性结构时

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The purpose of this paper is to report results obtained from two different single-degree-of-freedom (SDOF) modal analysis techniques as well as from a global multi-degree-of-freedom (MDOF) method when applied to frequency response function (FRF) measurements taken on a lightly-damped linear structure. A number of difficulties in using the global MDOF technique are identified and routes for their avoidance are suggested. It is concluded that reliable hatch processing of measured FRF data is possible as long as simple but rigorous checks are made to ensure the quality of global parameter identification.

机译：本文的目的是在应用于频率响应函数时从两种不同的自由度（SDOF）模态分析技术以及从全球多程度（MDOF）方法中报告从两种不同的自由度（SDOF）方法获得的结果报告FRF）在轻微衰减的线性结构上进行的测量。鉴定了使用全局MDOF技术的许多困难，并提出了避免避免的路线。结论是，只要简单但严格的检查，可以实现测量的FRF数据的可靠孵化处理，以确保全局参数识别的质量。

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《International Modal Analysis Conference》|2004年||共7页
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M. Imregun;
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中图分类 TP391.4-53;
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A COMPARISON OF SDOF AND GLOBAL MDOF MODAL ANALYSIS TECHNIQUES WHEN APPLIED TO A LIGHTLY-DAMPED LINEAR STRUCTURE

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