International Journal of Naval Architecture and Ocean Engineering

  • 제10권6호
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  • Pages.670-682
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  • 2018
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  • 2092-6782(pISSN)
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  • 2092-6790(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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Response of low-temperature steel beams subjected to single and repeated lateral impacts

  • Truong, Dac Dung (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Jung, Hae-Jung (Hyundai Mipo Dockyard) ;
  • Shin, Hyun Kyoung (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Cho, Sang-Rai (School of Naval Architecture and Ocean Engineering, University of Ulsan)
  • 투고 : 2016.07.26
  • 심사 : 2017.10.10
  • 발행 : 2018.11.30
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초록

This paper presents the experimental and numerical investigation results of the response of low-temperature steel (LT-FH32 grade steel) beams under repeated impacts at room temperature and a single impact at a sub-zero temperature. After conducting tensile tests at room and sub-zero, repeated impact tests were conducted on two clamped single-beam models at room temperature, and single-impact tests of two other clamped single-beam models were conducted at $-50^{\circ}C$. The single and repeated impact tests were conducted by releasing a knife-edge striker using a drop testing machine. The permanent deflection of the model measured after each impact gradually increased with increasing number of impacts. Under the reduced temperature, the permanent deflection of the models slightly decreased. The numerical analyses were also performed to predict the damage response of the tested single-beam models. A comparison of the numerical prediction with those of experiments showed quite reasonable agreement.

키워드

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피인용 문헌

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  2. Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature vol.2020, pp.None, 2020, https://doi.org/10.1155/2020/3713709
  3. Experimental study on the dynamic behavior of beams under repeated impacts vol.147, pp.None, 2021, https://doi.org/10.1016/j.ijimpeng.2020.103724
  4. Numerical study on the pseudo-shakedown of beams under repeated impacts vol.242, pp.None, 2021, https://doi.org/10.1016/j.oceaneng.2021.110137