摘要
针对协调共同规范(HCSR)中疲劳评估的概率水平和形状参数的选取问题,通过理论分析和数值计算分析对结构疲劳损伤贡献率最大的长期应力范围所对应的超越概率水平,分析不同超越概率水平下形状参数对结构疲劳寿命的敏感性,通过实船谱分析计算,得到热点应力范围长期分布。
Aiming at the selection of the exceeding probability level and shape parameter in fatigue assessment of the Harmo- nized Common Structural Rules （HCSR）, the exceeding probability corresponding to maximum contribution of the long-term stress ranges to structural fatigue damage was analyzed and the effects of Weibull shape parameter on structural fatigue life were investigated under various exceeding probabilities by theoretical analysis and numerical simulation. Through the calculations of the real ship by spectral analysis method, the long-term stress ranges of the hot spot were obtained.
出处
《船海工程》
2013年第6期22-24,共3页
Ship & Ocean Engineering
关键词
超越概率水平
形状参数
结构疲劳损伤
exceeding probability level
shape parameter
structural fatigue damage
