Scuttle shake analysis of open cars using OMA (Operational Modal Analysis).
We would like to introduce a case study by F-MA Consulting, a specialist in vibration noise analysis technology, titled "Scuttle Shake Analysis of Open Cars Using OMA (Operational Modal Analysis)." The definition of scuttle shake is: "a phenomenon commonly seen in open cars with low body rigidity," "which manifests as a 'shaking sensation' when driving in urban areas at speeds of 40 to 60 km/h," and "is generally said to be caused by low-frequency (10 to 20 Hz) twisting modes of the body." 【Experimental Analysis Using ModalVIEW】 - Collection of acceleration and deceleration data from actual vehicle runs at each measurement point - Pole extraction using SSI from time history data - Calculation of mode shapes at each point from the extracted modes - Display of vibration modes in the operational state For more details, please contact us or download the catalog.
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【Analysis Cases and Countermeasures】 ○Twisting Mode 17Hz ○Vibration Test at 19Hz ○Countermeasure Example →The effect of the "Dōda Bar" reduced the vibration level by 20% ●For more details, please contact us or download the catalog.
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F-MA Consulting Co., Ltd., commonly known as F-MAC, is a company based in Kyoto City that provides consulting services related to vibration and noise technology. The name is primarily derived from Newton's second law, F=MA. It also reflects the initials of the founder and the promotion of modal analysis. We accept inquiries regarding general engineering analysis, focusing on vibration and noise.