ASME Ⅷ-2中基于弹性总应力幅的疲劳评定方法进展  

Progress of Fatigue Assessment Method Based on Total Stress Amplitude in ASME VIII-2

作　　者：沈鋆 

机构地区：[1]惠生工程(中国)有限公司,上海201203

出　　处：《化工设备与管道》2013年第6期15-18,共4页Process Equipment & Piping

摘　　要：20世纪60年代,ASME压力容器规范提供了基于光滑试件疲劳曲线和弹性总应力幅进行疲劳评定的方法。该法沿用至今,但近几年在安全裕度、适用性等方面受到了一些争议。2007年颁布的新版ASMEⅧ-2中,该方法有了一些变动,如补充了附录3.C。文章试图对该法的最新进展予以阐述和剖析。Fatigue assessment method based on smooth bar fatigue curve and elastic total stress amplitude has been provided by ASME Pressure Vessel Code since 1960s. This method is still widely used today while also facing some controversy on the aspects of safety and adaption in recent years. However, this method has been improved significantly in new ASME Ⅷ-2 issued in 2007. This paper intended to present introduction and dissection on controversy and latest development of this method.

关 键 词：疲劳评定 总应力幅 疲劳强度减弱系数 塑性修正 

分 类 号：TQ050.2[化学工程] TH123[机械工程—机械设计及理论]