Saturated impulse and application of saturation equivalent method in cabin explosion

Table 1. Parameters of Cowper-Symonds strength model
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Table 1. Parameters of Cowper-Symonds strength model
参数数值
初始屈服应力${\sigma _0}$/MPa 235
硬化模量${E_{\rm{h}}}$/MPa 250
硬化指数 1
常数D/s−1 40.4
常数q 5

Table 2. Parameters of TNT explosives JWL state equation
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Table 2. Parameters of TNT explosives JWL state equation
参数数值参数数值
A₁/kPa 3.737 7×10⁸ w 0.35
A₂/kPa 3.747 1×10⁶ C-J爆速D_CJ/(m·s⁻¹) 6.93×10³
R₁ 4.15 E₀/(kJ·m⁻³) 6.0×10⁶
R₂ 0.9 C-J爆压P_CJ/kPa 2.1×10⁷

Table 3. Parameters of equivalent rectangular pulse loading

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Table 3. Parameters of equivalent rectangular pulse loading

m/kg	P₀/kPa	t^sat/ms	I^sat'/(kPa·ms）	2t_mean/ms	P_e/kPa
10	2 013.16	7.469 0	4 478.844 4	6.688 7	669.62
15	3 116.80	7.207 4	6 666.832 4	6.576 2	1 013.78
20	3 822.60	7.029 4	8 779.069 3	6.301 1	1 393.26
25	4 745.55	6.926 9	10 769.058 9	6.130 9	1 756.51

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Ling ZHU, Lanren TIAN, Decong LI, Jiayue WANG, Xiao ZHANG. Saturated impulse and application of saturation equivalent method in cabin explosion[J]. Chinese Journal of Ship Research, 2021, 16(2): 99

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