焊接接头疲劳评定的结构热点法研究现状  

Research progress on fatigue assessment of welded joints based on structural hot spot stress

作　　者：武奇[1] 邱惠清[1] 

机构地区：[1]同济大学机械工程学院,上海市201804

出　　处：《焊接》2008年第7期17-21,共5页Welding & Joining

摘　　要：结构热点法(structural hot spot stress)作为一种切实可行的疲劳评定方法已经引起人们的注意,并陆续在一些行业中得到应用。该方法的关键问题就是结构热点应力的计算方法和热点应力S-N曲线的获得。文中就目前所提出的几种热点定义方法和各种方法的比较进行了回顾,对热点应力曲线的获得和研究进展作了阐述,最后指出该方法在今后研究中所要注意的几个问题。As a feasible fatigue assessment method, structural hot spot stress has drawn more attention and it has been applied in some industry in succession. It is the key question of the method to calculate the hot spot stress and obtain Hot-Spot Stress Design S-N Curves. In this paper, some definition of hot spot stress presented and comparison of different structural stress approaches were reviewed in detail, Then the research progress on hot-spot stress design S-N curves were introduced, and some problems existed in studies were provided.

关 键 词：热点法 结构应力 焊接接头疲劳评定 

分 类 号：TG405[金属学及工艺—焊接]