An indirect approach to investigating the dynamics of a structure containing ball bearings

Čermelj, Primož (author), Boltežar, Miha (author)

This study introduces an integrated approach to the transmission of bearing vibrations in a generalized sense where the bearing is presented as a three-dimensional joint-model. A specially manufactured device and a corresponding analytical model are presented in order to compare experimental and numerical methods for investigating bearing transmission and bearing identification. Based on a multi-degree-of-freedom dynamic analysis, a predefined three-dimensional model of the bearing is used in a frequency domain synthesis with analytical and experimental modal analyses and FEM updating in order to obtain the system's overall dynamic properties. Such an approach separates the model of the bearing and its investigation from the remaining linear part of the whole system, which speeds up the computation andbroadens the investigationćs capabilities. A bearing-identification algorithm, using a perturbation approach with frequency response sensitivitiesand correlation analysis, is proposed, together with the requiredfrequency response functionćs measurements and identification results.

• Language: English
• Keywords: modalne analize, dinamične lastnosti, identifikacijski algoritmi
• Work type: Not categorized (r6)
• Tipology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2004
• Number of pages: str. 401-417
• Numbering: Letn. 276, št. 1/2
• UDC: 621.822.7:534.1
• ISSN on article: 0022-460X
• COBISS.SI-ID: 7419931
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Record is a part of a journal

• Title: Journal of sound and vibration
• Shortened title: J. Sound Vib.
• Publisher: Academic Press
• ISSN: 0022-460X
• COBISS.SI-ID: 540946