Numerical model to predict deformation of corrugated austenitic stainless steel sheet under cryogenic temperatures for design of liquefied natural gas insulation system |
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| Affiliation: | 1. Materials and Mechanical Entity, Vikram Sarabhai Space Centre, Trivandrum 695 022, India;2. Department of Metallurgical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi 221 005, India;1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai, 200240, China;2. State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing, 100028, China;3. Shanghai Institute of Aerospace System Engineering, Shanghai, 201108, China;1. Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, 208016, India;2. Vikram Sarabhai Space Centre, Indian Space Research Organization Trivandrum, Trivandrum, 695022, India |
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| Abstract: | Austenitic stainless steel exhibits nonlinear hardening behavior at low temperature and under various strain rate conditions caused by the phenomenon of transformation-induced plasticity (TRIP). In this study, a uniaxial tensile test for 304L austenitic stainless steel was performed below ambient temperature (?163, ?140, ?120, ?50, and 20 °C) and at strain rates (10?4, 10?3, and 10?2 s?1) to identify nonlinear mechanical characteristics. In addition, a viscoplastic damage model was proposed and implemented in a user-defined material subroutine to provide a theoretical explanation of the nonlinear hardening features. The verification was conducted not only by a material-based comparative study involving experimental investigations, but also by a structural application to the corrugated steel membrane of a Mark-III-type cargo containment system for liquefied natural gas. In addition, an accumulated damage contour was represented to predict the failure location by using a continuum damage mechanics approach. |
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| Keywords: | 304L stainless steel Transformation-induced plasticity Corrugated steel membrane Liquefied natural gas insulation system User-defined subroutine |
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