Mode Calculation and Testing of a Car Body in White. (2011)

• Record Type: Journal Article
• Authors: Yang, Ying; Zhao, Guangyao; Ma, Dongbo; Xu, Xiaobin
• Is Part Of: Shock and vibration. Volume 2011(2011)
• Page Start: 289
• Page End: 298
• Publication Date: 2011
• Subjects: Vibration modes -- finite element method -- model testing; Shock (Mechanics) -- Periodicals; Vibration -- Periodicals; 534.5
• DOI: 10.3233/SAV-2010-0604
• Languages: English
• ISSNs: 1070-9622

Abstract

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.