Numerical simulation of ultimate strength of hull plate based on critical state of elastic shakedown under cyclic loading

材料模型	弹性			塑性
				随动强化						各向同性强化
	$E{\text{/MPa}}$	$\nu $	${\sigma _{_{\rm{Y}}}}{\text{/MPa}}$	${C_1}{\text{/MPa}}$	${\gamma _{_1}}$	${C_2}{\text{/MPa}}$	$ {\gamma _{_2}} $	${C_3}{\text{/MPa}}$	${\gamma _{_3}}$	${Q_{_\infty }}{\text{/MPa}}$	B
Chaboche	205 800	0.3	313.6	13 921	765	4 240	52	1 573	14	25.6	4.4
理想弹塑性	205 800	0.3	313.6

Table 2. Load conditions

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Table 2. Load conditions

工况编号	载荷幅值ε/ε_Y	加载方式	循环次数	材料模型
Case 1	3.00	单次压缩		理想弹塑性
Case 2	0.70	循环压缩−拉伸	10
Case 3	0.78	循环压缩−拉伸	10
Case 4	0.86	循环压缩−拉伸	10
Case 22	0.70	循环压缩−拉伸	10	Chaboche
Case 33	0.78	循环压缩−拉伸	10
Case 44	0.86	循环压缩−拉伸	10

Table 3. Numerical calculation results of ultimate strength of hull plate under different grid sizes
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Table 3. Numerical calculation results of ultimate strength of hull plate under different grid sizes
网格尺寸/mm 极限强度/MPa
12.5×12.5 184.43
25×25 184.51
42.5×42.5 184.69

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Huwei CUI, Zemin CHEN, Qiyin DING. Numerical simulation of ultimate strength of hull plate based on critical state of elastic shakedown under cyclic loading[J]. Chinese Journal of Ship Research, 2023, 18(5): 150

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