Optimal design of internal pressure resistant square cabin based on strength analysis

性能参数	921A钢	DH40钢
${R_{\rm{m}}}$/(N·mm−2)	655	510
${R_{{\rm{eH}}}}$/(N·mm−2)	590	390
$\left(\dfrac{R_{\rm{m}}}{2.7}\right)$/(N·mm−2)	243	189
$\left(\dfrac {R_{{\rm{eH}}}}{1.5}\right)$/(N·mm−2)	393	260
弹性模量E/(N·mm−2)	2.1×105	2.1×105
密度/(kg·m−3)	7 850	7 850
许用应力/MPa	243	189
折减后的弹性模量/(N·mm−2)	1.4×105	1.4×105

Table 2. Initial design value of components

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Table 2. Initial design value of components

构件属性名称	初始设计值/mm	构件属性名称	初始设计值/mm
内壳角隅倒角半径r	600	内壳底部骨材g1	$ \bot \dfrac{{16 \times 200}}{{20 \times 100}}$
内壳板-1（角隅）板厚t1	32	内壳舷侧骨材g2	$ \bot \dfrac{{16 \times 200}}{{20 \times 100}}$
内壳板-2（底部）板厚t2	32	内壳顶部骨材g3	$ \bot \dfrac{{16 \times 200}}{{20 \times 100}}$
内壳板-3板厚t3	32	内壳横舱壁骨材g4	$ \bot \dfrac{{16 \times 200}}{{20 \times 100}}$
外壳板-1（角隅）板厚t4	28	外壳底部骨材g5	${\rm{HP220}} \times {\rm{11}}$
外壳板-2（底部）板厚t5	24	外壳舷侧骨材g6	$ \bot \dfrac{{16 \times 200}}{{20 \times 100}}$
外壳板-3板厚t6	20	外壳顶部骨材g7	$ \bot \dfrac{{16 \times 200}}{{20 \times 100}}$
角隅隔板板厚t7	26	外壳横舱壁骨材g8	$ \bot \dfrac{{16 \times 200}}{{20 \times 100}}$
水平隔板板厚t8	24	底部加强筋g9	$16 \times 180$
纵向隔板-1（底部）板厚t9	18	舷侧加强筋g10	$16 \times 180$
纵向隔板-2板厚t10	20	顶部加强筋g11	$16 \times 180$
横向隔板-1（底部）板厚t11	24	横舱壁水平加强筋g12	$16 \times 180$
横向隔板-2板厚t12	22	横舱壁垂向加强筋g13	$16 \times 180$
肘板板厚t13	20

Table 3. R-squared values of objective function
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Table 3. R-squared values of objective function
目标函数 R-squared值
${\sigma _1}$/MPa 0.959 33
${\sigma _2}$/MPa 0.928 55
M/t 0.998 88

Table 4. Response results of structure after global optimization

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Table 4. Response results of structure after global optimization

目标函数	许用值	初始值	ASA优化值	MIGA优化值	PSO优化值
σ₁/MPa	243	237.279	242.130	242.243	235.611
σ₂/MPa	189	178.761	187.103	185.818	180.756
M/t	−	1 569.780	1 355.172	1 445.334	1 422.096
模型减重百分比/%	−	−	13.67	7.93	9.41

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Yu GUO, Yuchao YUAN, Wenyong TANG. Optimal design of internal pressure resistant square cabin based on strength analysis[J]. Chinese Journal of Ship Research, 2021, 16(6): 151

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