ASME规范案例2843中高温分析方法的解读和讨论  

Interpretation and Discussion of Elevated Temperature Analysis Method in ASME Code Case 2843

作　　者：沈鋆[1] 陈志伟 刘应华[1] SHEN Jun;CHEN Zhi-wei;LIU Ying-hua(Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China;China Standardization Committee on Boilers and Pressure Vessels,Beijing 100029,China)

机构地区：[1]清华大学工程力学系,北京100084 [2]全国锅炉压力容器标准化技术委员会,北京100029

出　　处：《压力容器》2018年第12期47-55,68,共10页Pressure Vessel Technology

基　　金：国家重点研发计划项目(2016YFC0801905;2017YFF0210704)

摘　　要：2015年9月颁布的ASME规范案例2843,针对按ASMEⅧ-2进行分析的承压部件,给出了高温下多个失效模式的评定方法,其原理和框架基本参照ASMEⅢ-NH,该方法为运行于蠕变温度范围的承压设备设计提供了一条有效途径。通过对ASME规范案例2843中的方法及其与ASMEⅢ-NH的联系和区别进行解读和探讨,为国内工程设计人员更好地理解该规范案例提供参考。ASME code case 2843,as an extension of ASME Ⅷ-2,was issued in September 2015.This code case provides the evaluation methods against several failure modes for the components subjected to high temperature.These methods provide an effective way for the design of pressure equipment served in the creep temperature range.The principle and framework are basically referred to ASME Ⅲ-NH.In this paper,the methods in ASME code case 2843 and its relationship and difference with ASME Ⅲ-NH were interpreted and discussed,so as to provide reference for domestic engineering designers to better understand this code case better.

关 键 词：ASME规范案例2843 蠕变疲劳 蠕变棘轮 分析设计 

分 类 号：TH49[机械工程—机械制造及自动化] T-651[一般工业技术]