Abstract
The main goal of this paper is to propose a simplified model to predict the dynamic behavior; mainly vibration under effects of fluid. Firstly, an experiment is carefully designed incorporating important parameters of the system and experimental modal analysis is performed for solid only and with fluid. Then, modal analysis using FEM is performed in real scale 3D model of the test rig and the obtained results is approximated to experimental frequency of the system. Then, a simplified model is developed, which appends the results of explicitly computed mass and stiffness of supports, to a solid only FEM. The new model is analyzed and updated till it is considerably close to the results obtained previously. Based on sensitivity analysis, set of model parameters is selected for the model updating process. Response surface method is implemented to find values of model parameters yielding results closest to the experimental. The results can provide a basis for further experimental and numerical dynamic analysis and optimization.
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The first author would like to acknowledge the support of China Scholarship Council.
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Rajbamshi, S., Guo, Q., Zhan, M. (2020). Model Updating of Fluid-Structure Interaction Effects on Piping System. In: Linderholt, A., Allen, M., Mayes, R., Rixen, D. (eds) Dynamic Substructures, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-030-12184-6_12
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DOI: https://doi.org/10.1007/978-3-030-12184-6_12
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