Determination of Johnson Cook Strength and Failure Parameters of EN-GJS-400 Spheroidal Graphite Cast Iron

Authors : Burak Özcan, Ulvi Şeker

Pages : 254-269

View : 46 | Download : 60

Publication Date : 2024-08-31

Article Type : Research Paper

Abstract :In this study, to investigate the mechanical behavior of EN-GJS-400 nodular cast iron material, quasi-static tensile tests were conducted at room temperature and at 300°C, 500°C, and 700°C, along with compression tests at room temperature. To examine the behavior at high deformation rates, Split Hopkinson tests were carried out at four different strain rates, reaching up to approximately 4500/s. To reveal the damage behavior of the materials, tensile tests were conducted with four different notches (R=1.25, 2.5, 5, 10mm). Microstructure experiments and spectral analyses of the materials were performed. Based on the data obtained from the experiments, Johnson-Cook (J-C) material and damage model parameters were calculated. The calculated J-C material and damage parameters were defined in the Abaqus finite element software, and virtual tensile tests were conducted and compared with the actual test data.
Keywords : EN GJS 400, Johnson Cook, Split Hopkinson, Sonlu Elemanlar Analizi