Ultimate strength analysis of typical perforated high web frame structure in cruise ships

Table 1. Specification sheet of the model
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Table 1. Specification sheet of the model
参数尺寸/mm
甲板板 6
纵骨 86×6
纵桁 T450×100×8×10
横梁 T450×100×8×10

Table 2. Computational boundary conditions
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Table 2. Computational boundary conditions
边界约束
AB，CD Rx= Ry= Rz= Ux= Uz= 0，Uy≠0
BC，AD 自由
HH'，GG' Uz =0

Table 3. The initial defect rating table (thickness t, flexible \begin{document}$\; \beta $\end{document})^[12]

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Table 3. The initial defect rating table (thickness t, flexible \begin{document}$\; \beta $\end{document})^[12]

等级	缺陷幅度	缺陷幅度/板厚
轻度	${\rm{0} }{\rm{.025} }{\beta ^{\rm{2} } }{{t} }$	${\rm{0}}{\rm{.025}}{\beta ^{\rm{2}}}$
中度	${\rm{0} }{\rm{.1} }{\beta ^{\rm{2} } }{{t} }$	${\rm{0}}{\rm{.1}}{\beta ^{\rm{2}}}$
重度	${\rm{0} }{\rm{.2} }{\beta ^{\rm{2} } }{{t} }$	${\rm{0}}{\rm{.2}}{\beta ^{\rm{2}}}$

Table 4. Initial defect grade table and calculation results

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Table 4. Initial defect grade table and calculation results

等级	t/mm	系数A	对应工况	缺陷幅度/mm	幅度/板厚/%	极限降低幅度/%
1	6	0.00	imp0	0	0	−
2	6	0.01	imp1	1.40	23	9.1
3	6	0.015	imp1.5	2.11	35	13.9
4	6	0.02	imp2	2.81	47	18.9
5	6	0.03	imp3	4.22	70	25.7
6	6	0.04	imp4	5.63	94	31.3
7	6	0.05	imp5	7.04	117	34.8
8	6	0.06	imp6	8.44	141	37.3
9	6	0.07	imp7	9.85	164	39.3
10	6	0.08	imp8	11.26	188	40.0

Table 5. Table of working conditions and model parameters and ultimate stress

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Table 5. Table of working conditions and model parameters and ultimate stress

开孔模型			不开孔模型
工况编号	甲板板厚/mm	极限应力/kN	工况编号	甲板板厚/mm	极限应力/kN
1	5	0.459 9	16	5	0.515 9
2	5.5	0.495 1	17	5.5	0.525 0
3	6	0.542 2	18	6	0.565 1
4	6.5	0.617 1	19	6.5	0.689 4
5	7	0.639 8	20	7	0.725 6
6	8	0.662 3	21	8	0.728 6
7	10	0.572 2	22	10	0.609 3
8	12	0.716 6	23	12	0.760 3
9	13	0.476 5	24	13	0.528 0
10	14	0.483 1	25	14	0.526 2
11	16	0.464 5	26	16	0.530 1
12	22	0.472 9	27	22	0.504 9
13	6	0.403 5	28	6	0.449 3
14	8	0.429 0	29	8	0.472 8
15	10	0.422 9	30	10	0.473 0

Table 6. Calculation conditions of the perforated high web frame

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Table 6. Calculation conditions of the perforated high web frame

工况代号	甲板板厚T/mm	开孔半径R/mm	开孔形式
P1R125T5	5	125	2个腰圆孔、1个圆孔
P1R125T6	6	125	2个腰圆孔、1个圆孔
P1R130T5	5	130	2个腰圆孔、1个圆孔
P1R130T6	6	130	2个腰圆孔、1个圆孔
P1R135T5	5	135	2个腰圆孔、1个圆孔
P1R135T6	6	135	2个腰圆孔、1个圆孔
P1R140T5	5	140	2个腰圆孔、1个圆孔
P1R140T6	6	140	2个腰圆孔、1个圆孔
P2R125T5	5	125	3个腰圆孔
P2R125T6	6	125	3个腰圆孔
P2R135T5	5	135	3个腰圆孔
P2R135T6	6	135	3个腰圆孔

Table 7. Computed boundary conditions
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Table 7. Computed boundary conditions
边界约束
AB，CD Rx= Ry= Rz= Ux= Uz =0,Uy≠0
BC，AD Rx= Rz= Uz =0

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Jin GAN, Ou SHAN, Weiguo WU, Yongshui LIN. Ultimate strength analysis of typical perforated high web frame structure in cruise ships[J]. Chinese Journal of Ship Research, 2021, 16(5): 181

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