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http://dx.doi.org/10.3744/SNAK.2020.57.4.182

Experiments on the Denting Damage and Residual Strength of Stiffened Plates  

Park, Sang-Hyun (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Shin, Hyun Kyoung (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Kang, Eungsoon (UlsanLab Inc.)
Cho, Sang-Rai (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Jang, Yong-Su (Naval Technology Research Institute, Naval Logistics Command, Korean Navy)
Baek, Nam-Ki (Naval Technology Research Institute, Naval Logistics Command, Korean Navy)
Park, Dong-Ki (Naval Technology Research Institute, Naval Logistics Command, Korean Navy)
Publication Information
Journal of the Society of Naval Architects of Korea / v.57, no.4, 2020 , pp. 182-190 More about this Journal
Abstract
This study reports a series of drop impact tests performed to generate denting damages on stiffened plates and their residual ultimate strength tests under axial compression. The models were fabricated of general structural steel, and each model has six longitudinal stiffeners and two transverse frames. Among six fabricated models, four were damaged, and two were left intact for reference. To investigate the effects of collision velocity and impact location on the extent of damage, the drop height and the impact location were changed in each impact test. After performing the collision tests, the ultimate axial compression tests were conducted to investigate the residual strengths of the damaged stiffened plates. Finite element analyses were also carried out using a commercial package Abaqus/Explicit. The material properties obtained from a quasi-static tensile tests were used, and the strain-rate sensitivity was considered. After importing the collision simulation results, the ultimate strength calculations were carried out and their results were compared with the test data for the validation of the finite element analysis method.
Keywords
Stiffened plate; Impact test; Denting damage; Residual strength; Axial compression test;
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Times Cited By KSCI : 2  (Citation Analysis)
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