dc.contributor.authorWang, Yonghu
dc.contributor.authorShu, Dongwei
dc.contributor.authorYusaku, Fujii
dc.contributor.authorAkihiro, Takita
dc.contributor.authorTsuneaki, Ishima
dc.contributor.authorRyosuke, Araki
dc.identifier.citationWang, Y., Shu, D., Yusaku, F., Akihiro, T., Tsuneaki, I., & Ryosuke, A. (2018). Comparison between numerical analysis and the levitation mass method measurement test of a spherical structure early impacting water. Advances in Mechanical Engineering, 10(1).en_US
dc.description.abstractIn order to precisely measure water impact loads of a spherical structure vertically dropping onto a calm water surface, a new validity check of the analysis using the levitation mass method experiment is proposed. The main feature of levitation mass method experiment is to obtain a better estimation of early water impact loads through the application of Doppler effect. Experimental results of different heights are verified based on the Assessment Index and are in comparison with the classical experimental data for validation purpose. It shows that the levitation mass method measurement is useful and effective to obtain the water impact loads for the crashworthiness analysis. Besides, early water impact hydrodynamic behaviors are simulated based on the nonlinear explicit finite element method, together with application of a multi-material arbitrary Lagrangian–Eulerian solver. A penalty coupling algorithm is utilized to realize fluid–structure interaction between the spherical body and fluids. Convergence studies are performed to construct the proper finite element model by the comparison with experimental results, where mesh sensitivity, contact stiffness, and time-step size parametric studies are thoroughly investigated. The comparisons between experimental and numerical results show good consistency by the prediction of the water impact coefficients on the structure.en_US
dc.format.extent15 p.en_US
dc.relation.ispartofseriesAdvances in Mechanical Engineeringen_US
dc.rights© 2018 The Author(s). Creative Commons CC BY: This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://www.creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).en_US
dc.subjectWater Impacten_US
dc.subjectFluid–structure Interactionen_US
dc.titleComparison between numerical analysis and the levitation mass method measurement test of a spherical structure early impacting wateren_US
dc.typeJournal Article
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.description.versionPublished versionen_US

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