Finite element analysis of typical structure of side stringer skeleton under ice load

Table 1. Hull classification factor of PC2 icebreaker
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Table 1. Hull classification factor of PC2 icebreaker
参数数值
压溃失效船级因子CF_C 9.89
挠曲失效船级因子CF_F 46.8
载荷板尺寸船级因子CF_D 1.75
排水量船级因子CF_DIS 210
总纵强度船级因子CF_L 5.46

Table 2. Calculation of ice load on midship of ice band
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Table 2. Calculation of ice load on midship of ice band
参数数值
F_nonbow/N 2.864 7×10⁷
Q_nonbow/(N·m⁻¹) 8.657×10⁶
w_nonbow/m 3.309 2
b_nonbow/m 0.919
P_anonbow/MPa 9.417 558

Table 3. Material parameters
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Table 3. Material parameters
参数数值
杨氏模量E/MPa 206 000
泊松比 0.3
密度/(t·mm⁻³) 7.85×10⁻⁹

Table 4. Location and size of ice load in midship section

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Table 4. Location and size of ice load in midship section

典型节点结构形式	加载工况	加载载荷
典型节点结构形式	加载工况	压力P_a/MPa	载荷宽度w/m	载荷高度b/m
肋骨经过舷侧纵桁	肋骨跨端	9.418	3.309	0.919
肋骨经过舷侧纵桁	肋骨跨中
肋骨经过甲板	肋骨跨端
肋骨经过甲板	肋骨跨中

Table 5. Stress calculation results of rib passing through the side stringer area

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Table 5. Stress calculation results of rib passing through the side stringer area

计算工况	TA-1型贯穿孔穿越舷侧纵桁		TA-2型贯穿孔穿越舷侧纵桁		肋骨在舷侧纵桁处断开
计算工况	纵桁处最大应力/MPa	肋骨及肘板处最大应力/MPa	纵桁处最大应力/MPa	肋骨及肘板处最大应力/MPa	纵桁处最大应力/MPa	肋骨及肘板处最大应力/MPa
肋骨跨端	332	504	332	501	349	663
肋骨跨中	206	423	207	422	231	418

Table 6. Stress calculation results of rib passing through the deck area

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Table 6. Stress calculation results of rib passing through the deck area

计算工况	TA-3型贯穿孔穿越甲板		肋骨在甲板处断开
计算工况	甲板处最大应力/MPa	肋骨及肘板处最大应力/MPa	甲板处最大应力/MPa	肋骨及肘板处最大应力/MPa
肋骨跨端	273	412	318	344
肋骨跨中	201	355	316	336

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Xuehang YANG, Yanwu WANG, Pengfei LI, Yigang XU, Chuang LI. Finite element analysis of typical structure of side stringer skeleton under ice load[J]. Chinese Journal of Ship Research, 2021, 16(5): 71

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