顶板-纵肋焊接细节残余应力的松弛效应
|
钟雯,丁幼亮,宋永生,曹宝雅,耿方方
|
Relaxation effect of welding residual stress in deck-to-rib joints
|
Wen ZHONG,You-liang DING,Yong-sheng SONG,Bao-ya CAO,Fang-fang GENG
|
|
表 1 工况C、D下疲劳损伤对比 |
Tab.1 Comparison of fatigue damage of case C and case D |
|
工况 | $\Delta {S _i}$/ MPa | ${\sigma _{\rm{m}}}$/ MPa | ${n_i}$ | Ni | D | 工况C, | 仅考虑车载作用-图10(a) | 41.53 | −20.77 | 0.5 | 1.538×107 | 1.741×10−6 | 41.53 | −20.77 | 0.5 | 1.538×107 | 83.06 | −41.53 | 0.5 | 1.249×106 | 74.75 | −37.38 | 1.0 | 1.713×106 | 83.07 | −41.53 | 0.5 | 1.249×106 | 74.76 | −37.38 | 0.5 | 1.713×106 | 工况C, | 残余应力与车载应力耦合作用-图10(b) | 5.14 | 339.02 | 0.5 | 0 | 1.141×10−6 | 5.14 | 339.02 | 0.5 | 0 | 7.72 | 338.85 | 1.0 | 2.347×106 | 7.84 | 338.79 | 0.5 | 1.992×106 | 7.84 | 338.79 | 0.5 | 1.992×106 | 7.72 | 338.85 | 0.5 | 2.347×106 | 工况D, | 仅考虑车载作用-图11(a) | 11.55 | 5.78 | 0.5 | 0 | 0 | 11.55 | 5.78 | 0.5 | 0 | 23.10 | 11.55 | 0.5 | 0 | 20.79 | 10.39 | 1.0 | 0 | 20.79 | 10.39 | 1.0 | 0 | 23.10 | 11.55 | 0.5 | 0 | 工况D, | 残余应力与车载应力耦合作用-图11(b) | 8.75 | 328.06 | 1.0 | 0 | 3.681×10-9 | 15.23 | 331.41 | 0.5 | 2.796×108 | 14.06 | 330.64 | 1.0 | 0 | 15.31 | 331.36 | 0.5 | 2.641×108 | 14.08 | 330.64 | 0.5 | 0 | 14.06 | 330.66 | 0.5 | 0 |
|
|
|