Dynamic Constitutive Relations of Selective Laser Melting in 316L Stainless Steel

LIU Liang; XU Mingyang; SHI Jingwei; WANG Jiangbo

doi:10.19554/j.cnki.1001-3563.2026.09.034

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (9) : 329-334. DOI: 10.19554/j.cnki.1001-3563.2026.09.034

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Dynamic Constitutive Relations of Selective Laser Melting in 316L Stainless Steel

LIU Liang, XU Mingyang^*, SHI Jingwei, WANG Jiangbo

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Abstract

The work aims to clarify the mechanical properties of 316L stainless steel prepared by selective laser melting (SLM) and establish a dynamic constitutive relation suitable for this material. SLM-fabricated 316L stainless steel was used for tensile and compression samples. Quasi-static tensile tests were conducted on dumbbell-shaped samples, while dynamic compression tests were performed on cylindrical specimens to systematically evaluate their mechanical properties under various strain rates. Based on experimental data, stress-strain curves under quasi-static and dynamic loading were calculated. A Johnson-Cook constitutive model suitable for this material was fitted, which effectively described the static/dynamic mechanical behavior of SLM-fabricated 316L stainless steel. This study finds that the SLM process can enhance the mechanical properties of 316L stainless steel and successfully establishes a dynamic constitutive relationship suitable for this material. This study provides experimental evidence and theoretical reference for the application of SLM-fabricated 316L stainless steel in protective engineering.

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selective laser melting (SLM) / 316L stainless steel / Johnson-Cook constitutive model / dynamic mechanical properties

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LIU Liang, XU Mingyang, SHI Jingwei, WANG Jiangbo. Dynamic Constitutive Relations of Selective Laser Melting in 316L Stainless Steel[J]. Packaging Engineering. 2026, 47(9): 329-334 https://doi.org/10.19554/j.cnki.1001-3563.2026.09.034

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