3) Based on fatigue accumulating damage concept of hot spot stress and notch stress S-N curves, this paper discuss the fatigue strength and life of naval block-assembly joint with two different butt-welding distribution.
3、通过应用热点应力和切口应力的S-N曲线,在疲劳累积损伤理论的基础上,对某舰船的总段在两种不同对接焊缝布置下,进行了疲劳强度和疲劳寿命的比较计算分析。
参考来源 - 纵骨与外板同一截面对接结构有限元数值分析·2,447,543篇论文数据，部分数据来源于NoteExpress
它们的结果表明：钝切口比尖锐切口的动态应力强度因子增长率更快。
Their results showed a more rapid rate of increase in the dynamic sif for blunt than for sharp notches.
高温和室温的拉伸断裂应变小于0 .6 % ，不能有效地松弛材料切口处的应力集中。
All specimens′ fracture strain are less than 0.6%, it can not relax stress concentration at notch.
研究了V型切口尖端的弹塑性应力奇异性问题。
The problem of elastoplastic stress singularity near the tip of V notch is studied.
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