Mode calculation and testing of a car body in white

Issue title: 2nd International Conference on Vibro-Impact Systems (ICoVIS), Sanya, China, 6–9 January, 2010

Article type: Research Article

Authors: Yang, Ying | Zhao, Guangyao | Ma, Dongbo | Xu, Xiaobin

Affiliations: School of Mechanical Engineering and Automation, Northeastern University, Shenyang, 110819, China | Shenyang Aviation Vocational Technical College, Shenyang, 110043, China

Note: [] Corresponding author: Ying Yang, Tel.: +86 24 83691095; Fax: +86 24 83679731; E-mail: [email protected]

Abstract: The dynamic parameters of a car body in white (BIW) are important during a new car developing. Based on the finite element method, the model of a BIW is developed in which the welding points are treated specially as a new element type and the vibration modes of it are calculated. In modal testing, a fixed sine-sweeping exciter is used to conduct a single-point input force for the structure, whereas the output responses are picked up at different points to identify modes. The obtained modes are coincided both with the FE results and the practical testing.

Keywords: Vibration modes, finite element method, model testing

DOI: 10.3233/SAV-2010-0604

Journal: Shock and Vibration, vol. 18, no. 1-2, pp. 289-298, 2011