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Article

Characterisation of Compressive Behaviour of Low-Carbon and Third Generation Advanced High Strength Steel Sheets with Freely Movable Anti-buckling Bars

1
Gyeongbuk Research Institute of Vehicle Embeded Technology, Yeongcheon-si 38822, Korea
2
School of Mechanical Engineering, Pusan National University, Busan 46241, Korea
3
Department of Integrated Systems Engineering, Ohio State University, Columbus, OH 43210, USA
4
Department of Materials Processing, Korea Institute of Materials Science, Changwon 51508, Korea
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Ricardo J. Alves de Sousa
Metals 2022, 12(1), 161; https://doi.org/10.3390/met12010161
Received: 11 December 2021 / Revised: 11 January 2022 / Accepted: 15 January 2022 / Published: 17 January 2022
(This article belongs to the Section Metal Casting, Forming and Heat Treatment)
Measuring the compressive behaviour of sheet materials is an important process for understanding the material behaviour and numerical simulation of metal forming. The application of side force on both surfaces of a specimen in the thickness direction is an effective way to prevent buckling when conducting compressive tests. However, the side effects of side forces (such as the biaxial stress state and non-uniform deformation) make it difficult to interpret the measured data and derive the intrinsic compressive behaviour. It is even more difficult for materials with tension–compression asymmetry such as steels that undergo transformation-induced plasticity. In this study, a novel design for a sheet compression tester was developed with freely movable anti-buckling bars on both sides of the specimen to prevent buckling during in-plane compressive loading. Tensile and compressive tests under side force were conducted for low-carbon steel using the digital image correlation method. The raw tensile and compressive stress–strain data of the low-carbon steel showed apparent flow stress asymmetry of tension and compression, originating from the biaxial and thickness effects. A finite element method-based data correction procedure was suggested and validated for the low-carbon steel. The third generation advanced high strength steels showed intrinsic tension–compression asymmetry at room temperature whereas the asymmetry was significantly reduced at 175 °C. View Full-Text
Keywords: sheet compression; buckling; strength-differential effect; advanced high strength steel; digital image correlation; finite element analysis; transformation-induced plasticity (TRIP); friction; biaxial effect; side force sheet compression; buckling; strength-differential effect; advanced high strength steel; digital image correlation; finite element analysis; transformation-induced plasticity (TRIP); friction; biaxial effect; side force
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MDPI and ACS Style

Kim, J.; Jung, J.; Park, T.; Kim, D.; Moon, Y.H.; Pourboghrat, F.; Kim, J.H. Characterisation of Compressive Behaviour of Low-Carbon and Third Generation Advanced High Strength Steel Sheets with Freely Movable Anti-buckling Bars. Metals 2022, 12, 161. https://doi.org/10.3390/met12010161

AMA Style

Kim J, Jung J, Park T, Kim D, Moon YH, Pourboghrat F, Kim JH. Characterisation of Compressive Behaviour of Low-Carbon and Third Generation Advanced High Strength Steel Sheets with Freely Movable Anti-buckling Bars. Metals. 2022; 12(1):161. https://doi.org/10.3390/met12010161

Chicago/Turabian Style

Kim, Jaehoon, Jaebong Jung, Taejoon Park, Daeyong Kim, Young H. Moon, Farhang Pourboghrat, and Ji H. Kim. 2022. "Characterisation of Compressive Behaviour of Low-Carbon and Third Generation Advanced High Strength Steel Sheets with Freely Movable Anti-buckling Bars" Metals 12, no. 1: 161. https://doi.org/10.3390/met12010161

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