Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Scale Effects on the Structural Behavior of Steel Unstiffened Plates Subjected to Lateral Collisions

횡충돌 하중을 받는 비보강 강판의 구조거동에 대한 크기 효과

  • Cho, Sang-Rai (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Park, Jeong-Yul (Class NK) ;
  • Song, Seung-Uk (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Park, Sang-Hyun (School of Naval Architecture and Ocean Engineering, University of Ulsan)
  • Received : 2018.01.23
  • Accepted : 2018.02.18
  • Published : 2018.04.20
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Abstract

The scale effects on the permanent deformations and fractures of structures subjected to impact loadings have been aware by structural engineers for a long time. Experimental investigations have been performed with various structures to demonstrate the effects, but very few are directly related with marine structural elements. Furthermore, the causes of the scale effects have not clearly been answered yet. In this study, to quantify the scale effects on the permanent deflections, lateral collision tests were performed on steel unstiffened plates and the numerical analyses of the tested models were also conducted using a commercial package, Abaqus. After the substantiation of the numerical tool using the test results, a parametric study was carried out considering and neglecting the strain-rate hardening. Based upon the parametric study results, it may be concluded that the main cause of the scale effects on the permanent deflections of steel unstiffened plates subjected to lateral collision loads is the strain-rate effects.

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References

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