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Open AccessArticle

A New Formulation for Predicting the Collision Damage of Steel Stiffened Cylinders Subjected to Dynamic Lateral Mass Impact

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Department of Naval Architecture and Ocean Engineering, Nha Trang University, 02 Nguyen Dinh Chieu, Nha Trang 650000, Vietnam
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School of Intelligent Mechatronics Engineering, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul 143-747, Korea
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Faculty of Shipbuilding, Vietnam Maritime University, Hai Phong 180000, Vietnam
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Institute of Research and Development, Duy Tan University, Danang 550000, Vietnam
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Faculty of Civil Engineering, Vietnam Maritime University, 484 Lach Tray Street, Le Chan District, Haiphong 180000, Vietnam
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School of Naval Architecture and Ocean Engineering, University of Ulsan, Ulsan 44610, Korea
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UlsanLab Inc., Ulsan 44610, Korea
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Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(11), 3856; https://doi.org/10.3390/app10113856
Received: 1 May 2020 / Revised: 23 May 2020 / Accepted: 28 May 2020 / Published: 1 June 2020
(This article belongs to the Special Issue Advances on Structural Engineering)
The objective of this study is to develop a new formulation for predicting the permanent local denting damage of steel ring and/or stringer-stiffened cylinders under dynamic lateral mass impact. The considered scenarios could represent the collisions of offshore cylindrical structures with bow or stern of service vessels or floating objects. Before deriving the formulations, the numerical methods were developed using ABAQUS/Explicit to determine the deformation of these stiffened cylinder structures subjected to dynamic lateral mass impact. Next, rigorous parametric studies were performed on the actual design full-scaled stiffened cylinder examples using the developed numerical method. Based on the rigorous numerical results, new simple design formulations to predict the maximum permanent local dent depth of a stiffened cylinder are derived through a regression study as the function of a non-dimensional energy parameter. The accuracy and reliability of the derived formulations are confirmed by comparison with the available test results, nonlinear FEA and existing analytical, and empirical equations in the literature. A good agreement with existing test data for ship-offshore structure collisions was achieved. View Full-Text
Keywords: stiffened cylinder; collision damage; dynamic mass impact; design formulation stiffened cylinder; collision damage; dynamic mass impact; design formulation
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MDPI and ACS Style

Do, Q.T.; Huynh, V.V.; Vu, M.T.; Tuyen, V.V.; Pham-Thanh, N.; Tra, T.H.; Vu, Q.-V.; Cho, S.-R. A New Formulation for Predicting the Collision Damage of Steel Stiffened Cylinders Subjected to Dynamic Lateral Mass Impact. Appl. Sci. 2020, 10, 3856.

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