Model Updating for a Welded Structure Made from Thin Steel Sheets

Abstract:

Dynamic behaviour of a welded structure made from thin metal sheets which has a large flat surface and has been assembled together by a number of scattered spot welds is investigated. An impact hammer and roving accelerometers are used in the modal tests to provide data to update the FE model. NASTRAN Solution 103 is used to compute natural frequencies and modes of interest. The large error of the initial FE model is largely reduced mainly by adjusting a crucial parameter of the bending moment of inertia ratio, 12I/T**3.

• Periodical: Applied Mechanics and Materials (Volume 70)
• Pages: 117-122
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.70.117
• Online since: August 2011
• Authors: M. N. Abdul Rani, D. Stancioiu, M.A. Yunus, Hua Jiang Ouyang, H. Deng, S. James
• Keywords: Initial Curvature, Initial Stress, Modal Test, Model Updating, Resistance Spot Weld

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