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Effects of Low Temperature on ASTM A131: An Experimental and Numerical Study

[+] Author Affiliations
Dae Kyeom Park, Do Kyun Kim, Bong Ju Kim, Jung Kwan Seo, Jeom Kee Paik

Pusan National University, Busan, Korea (Republic)

Paper No. OMAE2012-83188, pp. 425-437; 13 pages
doi:10.1115/OMAE2012-83188
From:
  • ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 6: Materials Technology; Polar and Arctic Sciences and Technology; Petroleum Technology Symposium
  • Rio de Janeiro, Brazil, July 1–6, 2012
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4493-9
  • Copyright © 2012 by ASME

abstract

The aim of this study was to investigate the effects of low temperatures on the material properties and crashworthiness of ASTM A131-type carbon steel. A series of tensile coupon tests and crushing tests on square tubes were performed in a liquid nitrogen cooled chamber to examine their material behavior and crashing behavior at a series of low temperatures under quasistatic conditions. The temperature conditions cover a cryogenic condition, the typical Arctic temperatures and room temperature.

In the previous study, ASTM A500-type carbon steel is considered [13] and in present study the different grades of ASTM A131-type carbon steel for ships and offshore structures are considered, including Grades A, B and D of mild steel and Grades AH and DH of high tensile steel.

The results of the tensile coupon tests showed an increase in the strength and in non-uniform fracture strain behavior in different grades and temperatures. Unstable crushing behavior and fractures were observed in the crushing tests. LS-DYNA nonlinear finite element method analyses were performed using reliable nonlinear finite element method modeling techniques to assess the structural crashworthiness of the materials at low temperatures.

Copyright © 2012 by ASME

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