Compressive behaviours of double skin composite walls at low temperatures relevant to the arctic environment

2019 ◽  
Vol 140 ◽  
pp. 294-303 ◽  
Author(s):  
Jia-Bao Yan ◽  
Zhe Wang ◽  
Jian Xie
Keyword(s):  
Low Temperatures ◽  
The Arctic ◽  
Arctic Environment ◽  
Double Skin ◽  
Composite Walls

On the Crashworthiness of Steel-Plated Structures in an Arctic Environment: An Experimental and Numerical Study

2015 ◽  
Vol 137 (5) ◽  
Author(s):  
Dae Kyeom Park ◽  
Do Kyun Kim ◽  
Chang-Hee Park ◽  
Dong Hee Park ◽  
Bong Suk Jang ◽  
...  
Keyword(s):  
Material Properties ◽  
Low Temperatures ◽  
Numerical Study ◽  
Limit State ◽  
Arctic Region ◽  
Tensile Tests ◽  
The Arctic ◽  
Strength Performance ◽  
Arctic Environment ◽  
Crushing Behavior

Structural crashworthiness with regard to crushing and fracture is a key element in the strength performance assessment of ship collisions in the Arctic. The aim of this study is to investigate the crashworthiness characteristics of steel-plated structures subject to low temperatures that are equivalent to the Arctic environment. The effect of low temperatures on the material properties is examined on the basis of tensile tests. Crushing tests are undertaken on steel-square tubes subject to a quasi-static crushing load at both room and low temperatures. The crushing behavior of the square tubes in this test is compared with ls-dyna computations. It is found that low temperatures have a significant effect on not only the material properties but also the crashworthiness of steel-plated structures in terms of mean crushing loads and brittle fracture. It is suggested that the collision-accidental limit state design of ships intended to operate in the Arctic region should be carried out by taking the effect of low temperatures into account.

On the Crashworthiness of Steel-Plated Structures in an Arctic Environment: An Experimental and Numerical Study

2010 ◽  
Author(s):  
Jeom Kee Paik ◽  
Bong Ju Kim ◽  
Sung Kuk Park ◽  
Do Kyun Kim ◽  
Chang Hee Park ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Numerical Study ◽  
Limit State ◽  
Arctic Region ◽  
Offshore Structures ◽  
The Arctic ◽  
Strength Performance ◽  
Arctic Environment ◽  
American Society ◽  
Crushing Behavior

The aim of this study is to investigate the crashworthiness characteristics of steel-plated structures subject to low temperatures that are equivalent to the Arctic environment. Structural crashworthiness with regard to crushing and fracture is a key element in the strength performance assessment of ship collisions in the Arctic, which provides the primary motivation for the study. This article is a sequel to the authors’ previous paper [1]. In contrast to the previous paper, which dealt with test structures made of American Society for Testing and Materials (ASTM) A500-type carbon steel with the wall slenderness coefficient (b/t) of 37.5, the present paper considers grade A steel with the wall slenderness coefficient (b/t) of 25. Crushing tests are undertaken on square tubes subject to a quasi-static crushing load at both room and low temperatures. The effect of low temperatures on the material properties is examined on the basis of tensile coupon test results. The crushing behavior of the square tubes in this test is compared with LS-DYNA computations. It is found that low temperatures have a significant effect on the crashworthiness of steel-plated structures in terms of mean crushing loads and brittle fracture. The use of grade A steel for ships and offshore structures in an Arctic environment is not relevant. The modeling techniques for the structural crashworthiness analysis presented in this paper are found to be pertinent by comparison with experimental results and nonlinear finite element method computations. It is suggested that the collision-accidental limit state design of ships intended to operate in the Arctic region be carried out by taking the effect of low temperatures into account.

scholarly journals NUMERICAL AND THEORETICAL STUDIES ON DOUBLE STEEL PLATE COMPOSITE WALLS UNDER COMPRESSION AT LOW TEMPERATURES

2021 ◽  
Keyword(s):  
Finite Element ◽  
Low Temperatures ◽  
Steel Plate ◽  
Theoretical Models ◽  
Steel Plates ◽  
The Arctic ◽  
Element Analysis ◽  
Compressive Performance ◽  
Load Displacement ◽  
Composite Walls

Double steel plate composite walls (DSCWs) with several unique types of connectors have been implemented to protect offshore oil exploration platforms from concentric forces caused by ice in the Arctic region. This paper investigates the compressive perfor-mance of DSCWs with interlocked J-hooks and overlapped headed studs at low temperatures ranging from 20 ℃ to -80 ℃ with nonlinear finite element models (FEMs). The intricate geometric size of the concrete, multiple interactions of the concrete with the connectors, and material nonlinearities of the concrete have been thoroughly simulated. The reasonable consistency between the results of the monotonic tests and finite element analysis (FEA) on nine DSCWs with interlocked J-hooks and seven DSCWs with overlapped headed studs indicates that the FEMs can effectively predict the compressive performance of the DSCWs at low temper-atures. On the basis of the validated FEMs, the effects of the horizontal and vertical spacing of the connectors on the compressive performance of the DSCWs are studied. Finally, theoretical models of the load-displacement curves are developed to reveal the compressive response of DSCWs at low temperatures with different types of connectors, taking into account the restraining effect of steel plates on the inner concrete and the local buckling of steel plates. Compared with previous tests and FEA, the developed theoretical models have reasonable consistency for the load-displacement curves of DSCWs at low temperatures.

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