Operational modal analysis of vehicle system based on SSI under operational conditions

Suxia Zhou; Yunye Xie; Jilong Xie; Fang Li

doi:10.1117/12.851704

14 April 2010 Operational modal analysis of vehicle system based on SSI under operational conditions

Suxia Zhou, Yunye Xie, Jilong Xie, Fang Li

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 75225N (2010) https://doi.org/10.1117/12.851704
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

Abstract

The modal parameters of linear vehicle system are analyzed by the theoretical modal parameter analysis method first, and then SSI based on operational conditions is presented to form the estimation formula of modal parameters of linear vehicle system. At last, the modal parameters of linear vehicle system are identified by SSI after its vibration test under operational conditions, and are simultaneously compared to the results obtained by the theoretical modal parameter analysis method. Comparison results show discrepancies of 0.61~8.32 percent on modal frequencies and 3.86~11.61 percent on modal damping ratios, which implies that SSI based on the operational condition is feasible and effective, and has comparatively higher precision to meet the needs of engineering.

Citation Download Citation

Suxia Zhou, Yunye Xie, Jilong Xie, and Fang Li "Operational modal analysis of vehicle system based on SSI under operational conditions", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75225N (14 April 2010); https://doi.org/10.1117/12.851704

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