Chinese Journal of Ship Research, Volume. 18, Issue 3, 163(2023)
Numerical analysis of dynamic response of Ti80 alloy plate under low-velocity impact
Figures & Tables(17)
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Table 1. Chemical composition of the Ti80 alloy（mass fraction）
View tableView in ArticleTable 1. Chemical composition of the Ti80 alloy（mass fraction）
化学成分 质量分数/% 化学成分 质量分数/% C成分 <0.010 0 Si成分 0.019 0 O成分 0.055 0 Al成分 6.180 0 N成分 <0.005 0 Mo成分 1.060 0 H成分 0.001 6 Zr成分 2.100 0 Fe成分 0.012 0 Nb成分 2.800 0
Table 2. Material parameters of Johnson-Cook constitutive model for Ti80 alloy[17]
View tableView in ArticleTable 2. Material parameters of Johnson-Cook constitutive model for Ti80 alloy[17]
参数 数值 屈服强度A/MPa 764 应变硬化系数B/MPa 914 应变率强化指数n 0.93 应变率强化系数C 0.007 热软化指数m 0.631 参考应变率 $ {\dot \varepsilon _0} $ /s−10.001 转变温度 $ {\theta _{\text{t}}} $ /K573 熔化温度 $ {\theta _{\text{m}}} $ /K1 923 失效参数 $ {d_1} $ −0.09 失效参数 $ {d_2} $ 0.27 失效参数 $ {d_3} $ 0.48 失效参数 $ {d_4} $ 0.014 失效参数 $ {d_5} $ 3.87 断裂能 $ {G_{\text{f}}} $ /(N·mm−1)58.31
Table 3. Comparison of FEA method and experimental results about impact resistance
View tableView in ArticleTable 3. Comparison of FEA method and experimental results about impact resistance
冲击能量/J 冲击力峰值/kN 误差/% 冲头位移峰值/mm 误差/% 能量吸收量/J 误差/% 无量纲损伤因子 误差/% 试验 仿真 试验 仿真 试验 仿真 试验 仿真 48 21.6 24.3 11.1 3.7 3.5 5.4 23.2 25.1 7.6 0.483 0.523 7.6 83 27.3 30.1 9.3 5.0 4.8 4.0 47.3 52.1 9.2 0.570 0.628 9.2 128 33.3 35.9 7.2 6.4 6.1 4.7 81.9 90.5 9.5 0.640 0.707 9.5 285 42.6 45.1 5.5 10.2 10.0 2.0 223.7 250.1 10.6 0.785 0.878 10.6
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Chang YE, Pan ZHANG, Xiaoyang LU, Peng JIANG, Yuansheng CHENG. Numerical analysis of dynamic response of Ti80 alloy plate under low-velocity impact[J]. Chinese Journal of Ship Research, 2023, 18(3): 163
Paper Information
Category: Ship Structure and Fittings
Received: Mar. 3, 2022
Accepted: --
Published Online: Mar. 20, 2025
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