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AlSi10Mg多孔结构在不同加载应变率下的损伤模式及响应机制
蔡宣明, 张伟, 范志强, 高玉波, 王俊元, 张柱军

Damage Modes and Response Mechanisms of AlSi10Mg Porous Structures Under Different Loading Strain Rates
CAI Xuanming, ZHANG Wei, FAN Zhiqiang, GAO Yubo, WANG Junyuan, ZHANG Zhujun
表1 Johnson-Cook本构模型和断裂准则相关参数
Table 1 Correlation parameters of the Johnson-Cook principal model and fracture criterion
ParameterSymbolValueUnit
Yield strength parameterM331.17MPa
Model parameterB576.65MPa
Strain rate sensitive parameterC0.032
Hardening indexn0.99
Temperature softening parameterm0.945
Reference strain rate˙ε01s-1
Reference temperatureTr298K
Melting point temperatureTm843K
Material model parameterD10.04704
D21.155
D3-0.841
D4-0.042
D50
Material densityρ2700kg·m-3
Elastic modulusE75GPa
Poisson's ratioν0.3