AEROSPACE SHANGHAI, Volume. 42, Issue 2, 135(2025)
Rapid Analysis on the Crack Propagation in Storage Tank Structures Based on the Kriging Model
Figures & Tables(14)
Fig. 2. Analysis on the crack propagation in the storage tank structures based on the extended finite element method
Fig. 3. Stress contours of the finite element model for one eighth of the storage tank
Fig. 4. Fatigue crack propagation curves in the circumferential and longitudinal weld zones
Fig. 5.
Fig. 6. Analysis on the influence of the stress ratio R on the fatigue crack propagation life
Fig. 7. Analysis on the influence of the inclination angle
Fig. 8. Propagation path of the initial cracks at different inclination angles
Fig. 9. Construction process of the rapid prediction model for the fatigue fracture life of welded structures for storage tanks
Table 1.
Parameters of the welding structural materials View tableView in ArticleTable 1.
Parameters of the welding structural materials 区域 杨氏模量
E/GPa
幂硬化本构参数 A/MPa B/MPa n 焊缝 46.7 179.2 1 675 0.786 9 热影响区 52.8 220.5 4 400 0.893 4 母材区 82.0 视为完全弹性
Table 2.
Parameters of the Paris formula View tableView in ArticleTable 2.
Parameters of the Paris formula 区域 相关材料常数C 裂纹扩展指数m 焊缝 1.527 5×10-11 3.795 07 热影响区 6.221 8×10-12 4.224 20 母材区 3.858 5×10-12 3.939 24
Table 3.
Ranges of sample parameter values View tableView in ArticleTable 3.
Ranges of sample parameter values 参数 下界 上界 初始裂纹中心xc/mm -2 2 初始裂纹中心yc/mm 2 324 2 404 初始裂纹角度 -90 90 应力比 0.1 0.5
Table 4.
Data sets of crack propagation View tableView in ArticleTable 4.
Data sets of crack propagation 样本集合 裂纹中心xc/mm 裂纹中心yc/mm 裂纹角度 应力比 扩展寿命 -0.68 2 379.12 16.42 0.24 11 478 -1.01 2 358.47 1.87 0.33 29 281 -1.56 2 355.63 -44.63 0.33 98 821 0.10 2 386.64 -9.24 0.21 14 827 -0.17 2 338.91 -5.68 0.32 30 084 0.87 2 390.37 12.47 0.37 43 684 0.43 2 385.70 -48.10 0.39 154 576 -0.22 2 389.48 23.63 0.12 12 513 ︙ ︙ ︙ ︙ ︙ ︙
Table 5.
Comparison of life prediction results obtained by the finite element simulation model and Kriging model View tableView in ArticleTable 5.
Comparison of life prediction results obtained by the finite element simulation model and Kriging model 测试
样本
集合
有限元仿真 Kriging模型 预测相对误差/% 扩展寿命 时间/s 扩展寿命 时间/s 43 684 319 42 486 11.72 2.74 33 659 237 34 074 10.34 1.23 109 814 641 105 435 11.18 3.98 12 513 196 12 235 11.51 2.22 221 653 911 207 875 12.06 6.21
Tools
Get Citation
Copy Citation Text
Haoran FAN, Jinyu WANG, Xiangshuo WANG, Wenfeng ZHANG, Tao LIU, Chong WANG. Rapid Analysis on the Crack Propagation in Storage Tank Structures Based on the Kriging Model[J]. AEROSPACE SHANGHAI, 2025, 42(2): 135
Paper Information
Category: Simulation and Analysis
Received: Nov. 30, 2024
Accepted: --
Published Online: May. 26, 2025
The Author Email:
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20