A fatigue life analysis of weld cracks in large openings coaming with cone shell

Table 1. Comparison of stress values at welding toes of coaming (unit: MPa)
View table
View in Article
Table 1. Comparison of stress values at welding toes of coaming (unit: MPa)
围栏焊缝焊趾处测量值 a/t = 1.0 a/t = 0.8 a/t = 0.3
纵向应力 −495.21 −505.793 −499.925 −497.506
周向应力 −475.48 −486.598 −478.949 −492.163

Table 2. The Ramberg-Osgood formula parameter of material sample
View table
View in Article
Table 2. The Ramberg-Osgood formula parameter of material sample
参数 α n σ₀/MPa
数值 856.713 0.1118 925

Table 3. The maximum structural stress and corresponding locations in different mesh sizes
View table
View in Article
Table 3. The maximum structural stress and corresponding locations in different mesh sizes
网格尺寸a/t 对应位置/(°) 结构应力/MPa
1.0 0 −1432.94
0.8 0 −1434.23
0.3 0 −1446.34

Table 4. The parameter of master e-N curve and fatigue life expectancy
View table
View in Article
Table 4. The parameter of master e-N curve and fatigue life expectancy
统计依据 C h 疲劳寿命N
−3σ 0.059 071 0.3195 748.827
−2σ 0.070 794 0.319 5 1 319.682
中值 0.101 685 0.319 5 4 098.885
+2σ 0.146 054 0.319 5 12 730.973
+3σ 0.175 041 0.319 5 22 436.749

Tools

Get Citation

Copy Citation Text

Huangyin WANG, JUN MA, Liming GENG. A fatigue life analysis of weld cracks in large openings coaming with cone shell[J]. Chinese Journal of Ship Research, 2023, 18(4): 242

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites