宽应变率范围内 ZL104 铝合金的 J-C 本构模型及高压状态方程

In order to investigate the mechanical behavior of ZL104 aluminum alloy under high temperature and high strain rate and obtain its numerical simulation model parameters, quasi-static tensile tests at room temperature, dynamic compression tests at different temperatures and plate impact tests were conducted by universal testing machine, Hopkinson compression bar and first stage light gas gun testing system within wide strain rate range (10⁻³～10⁴ s⁻¹). The experimental results indicate that ZL104 aluminum alloy shows obvious strain hardening and strain rate enhancement effects, and the spalling strength is linearly positively correlated with strain rate. Based on the Johnson Cook (J-C) constitutive model, Gruneisen state equation and experimental results, the relevant parameters of ZL104 aluminum alloy were calibrated. The damage process was analyzed using LS-Dyna finite element software. In addition, the reliability of the J-C constitutive model and Gruneisen state equation parameters was verified based on experimental results of dynamic compression and plate impact.