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http://dx.doi.org/10.5916/jkosme.2017.41.3.222

Non-linear tensile behavior of high manganese steel based on elasto-plastic damage model  

Kim, Jong-Hwan (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Lee, Jeong-Ho (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Kim, Seul-Kee (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Chun, Min-Sung (Central Research Institute, Samsung Heavy Industries)
Lee, Jae-Myung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Abstract
High manganese steel exhibits excellent mechanical properties with respect to strength and durability at low temperatures. Recently, high manganese steel has been considered as an alternative to existing materials, such as nickel steel and SUS304L for application as tank material for Liquefied Natural Gas (LNG) cargo containment systems. In the present study, tensile tests were performed at room and cryogenic temperatures in order to investigate the mechanical properties and non-linear tensile behavior of high manganese steel. In addition, elasto-plastic damage model was applied using the finite element analysis software ABAQUS via a user defined material subroutine (UMAT) to describe the material behavior. Finally, the results of the finite element simulations using the UMAT were compared to those of the tensile tests in order to validate the proposed UMAT. It has been demonstrated that the UMAT can effectively describe the non-linear tensile behavior of high manganese steel.
Keywords
High manganese steel; Elasto-plastic damage model; Finite element analysis; ABAQUS user defined material subroutine(UMAT);
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