变幅载荷作用下的疲劳裂纹扩展情况更能够反映海洋结构物真实的疲劳行为。已有的关于载荷次序问题的研究中,多是考虑在定幅值载荷历程中加入单个或多个超载/低载,或加入块状超载/低载,使变幅载荷序列得到简化。文章则主要研究更接近真...变幅载荷作用下的疲劳裂纹扩展情况更能够反映海洋结构物真实的疲劳行为。已有的关于载荷次序问题的研究中,多是考虑在定幅值载荷历程中加入单个或多个超载/低载,或加入块状超载/低载,使变幅载荷序列得到简化。文章则主要研究更接近真实情况的随机载荷序列,超载、低载随机相互作用下的载荷次序效应对海洋结构疲劳裂纹扩展率的影响。首先介绍了载荷次序效应问题的研究现状和基本结论,总结了考虑载荷次序效应的变幅载荷作用下疲劳裂纹扩展模型,然后简单介绍了文中应用的疲劳寿命预报统一方法 (Unified Fatigue Life Prediction,UFLP)的基本思想,最后给出了随机载荷作用下,应用UFLP法计算海洋结构物疲劳裂纹扩展的示例。展开更多
基金Supported by the State Key Program of National Natural Science Foundation of China ＇Structural Reliability Analysis on the Spherical Hull of Deepsea Manned Submersibles＇(Grant No.51439004) the scientific innovation program project of ＇Key technology rese
基金Supported by the General Program of National Natural Science Foundation of China(Grant No.51879157,No.51679133)State Key Program of National Natural Science Foundation of China(Grant No.51439004)~~
文摘变幅载荷作用下的疲劳裂纹扩展情况更能够反映海洋结构物真实的疲劳行为。已有的关于载荷次序问题的研究中,多是考虑在定幅值载荷历程中加入单个或多个超载/低载,或加入块状超载/低载,使变幅载荷序列得到简化。文章则主要研究更接近真实情况的随机载荷序列,超载、低载随机相互作用下的载荷次序效应对海洋结构疲劳裂纹扩展率的影响。首先介绍了载荷次序效应问题的研究现状和基本结论,总结了考虑载荷次序效应的变幅载荷作用下疲劳裂纹扩展模型,然后简单介绍了文中应用的疲劳寿命预报统一方法 (Unified Fatigue Life Prediction,UFLP)的基本思想,最后给出了随机载荷作用下,应用UFLP法计算海洋结构物疲劳裂纹扩展的示例。
基金Supported by Supported by the Sci-tech Innovation Funds from CSSRC(Grant No.G3314)the State Key Program of National Natural Science of China ‘Structural Reliability Analysis on the Spherical Hull of Deep-sea Manned Submersibles’(Grant No.51439004)
基金Supported by Youth Foundation of Jiangsu Province(Project No.BK2012095)Special Program for Hadal Science and Technology of Shanghai Ocean University(Project No.HSTRC-T-2013-01)
基金Supported by the State Key Program of National Natural Science of China(Project No.51439004)The general Program of National Natural Science Foundation of China(Project No.51679133)The scientific innovation program project by the Shanghai Committee of Science and Technology(Project No.15DZ1207000)
基金Supported by Youth Foundation of Jiangsu Province(BK2012095)Special program for Hadal Science and Technology of Shanghai Ocean University(HAST-T-2013-01)The doctoral research fund of Shanghai Ocean University(2013-2015)
基金Supported by the General Program of National Natural Science Foundation of China(Grant No.51679133)The State Key Program of National Natural Science of China(Project No.51439004)
