Dynamic Mechanical Behavior and Constitutive Models of S890 High-Strength Steel at Intermediate and High Strain Rates

Combined effects of elevated temperatures and high strain rates on compressive performance of S30408 austenitic stainless steel

“…It is known that keeping the strain rate constant is difficult when subjected to the quick loading. In 10 general, the strain rate became relatively stable after experiencing the rapid-rise and obvious fluctuation stages, and similar trends were also found in other SHPB tests [35,36]. Given the unstable strain rate over the whole period, the integral averaging method suggested by Yang et al [35] is employed to calculate the strain rate in this work.…”

A continuous dynamic constitutive model for normal- and high-strength structural steels

“…1). The reliability and consistency of test results can vary between the different experimental techniques with variability typically increasing with increasing strain rate [19,[21][22][23].…”

“…Table 1 summarizes previous studies into the dynamic stress-strain characteristics of structural steels [6,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], where the key information with respect to the studied steel grades, numbers of tests, adopted strain rates, data processing method and test setup is provided. Some early studies [5,7,8], in which full stress-strain curves were not reported, have been excluded from Table 1, while the particular steel grades used in the WTC [17] were not specifically reported.…”

“…Since the middle of the twentieth century, a number of studies [5][6][7][8] into the dynamic behaviour of mild steels have been carried out, identifying and quantifying the importance of strain-rate effects on the dynamic yield and ultimate strengths. Recently, the strain ratedependent properties of normal-strength [9][10][11][12][13][14][15][16][17] and high-strength [15,[17][18][19][20][21][22][23] structural steels have been investigated at intermediate and high strain rates, and full dynamic stressstrain curves have been obtained and analyzed. Several strain-rate effect models have also been developed to predict the dynamic properties of specific steel grades.…”

Numerical modeling and constitutive model verification for high-strength automotive steel

“…4 The Johnson-Cook model has been extensively utilized in numerous finite element tools to characterize the dynamic behavior of materials and exhibited acceptable simulation accuracy for metals at various temperatures and different strain rates. [5][6][7][8][9][10] Owing to being embedded in the finite element tool, the Cowper-Symonds empirical model, which describes the influence of strain rate sensitivity and strain strengthening behaviors on flow stress, is frequently utilized by engineers and researchers, 11,12 and 1 State Key Laboratory of Metal for Marine Equipment and Application, Anshan, P.R. China Singh et al 13 proved that its prediction accuracy for multi-phase steel was as good as the Johnson-Cook model.…”