焊接结构疲劳强度和疲劳寿命研究现状及展望  

Research status and prospect on fatigue assessment and life of the welded structures

作　　者：吴海超[1] 方海容[1] 何忠韬[1] 

机构地区：[1]南京铁道职业技术学院动力工程学院,210031

出　　处：《焊接》2014年第7期26-31,54,共7页Welding & Joining

基　　金：国家自然科学基金资助项目(51105205)

摘　　要：焊接广泛应用于压力容器、车辆等工程结构中,是机械结构重要的连接方式,基于应力的疲劳特性分析是其中的重要问题。综述目前国内外焊接接头疲劳强度理论研究现状,总结和对比各种焊接接头疲劳寿命评价方法优缺点及适用范围,为工程实际应用中分析焊接结构的疲劳寿命及安全性评估提供参考。指出基于应变的结构疲劳寿命预测是未来研究重点。The research status of fatigue properties about structures with welding joints is reviewed in this paper.Various methods for fatigue life evaluating are summarized and contrasted,the scope of application of different methods is discussed as well.That could be as the reference in the practical application to assess the fatigue life and safety for welding structure.Based on the reviews,it is can be conclude that the method based on the structure strain for fatigue life prediction will be the emphasis in the future research.

关 键 词：压力容器 焊接接头 结构疲劳 应力分析 

分 类 号：TG405[金属学及工艺—焊接]