压力容器2024，Vol.41Issue(7)：40-48,9.DOI:10.3969/j.issn.1001-4837.2024.07.006
GB/T 4732-2024《压力容器分析设计》中棘轮评定方法的解读及应用
Interpretation and application of ratcheting assessment methods in GB/T 4732-2024 Pressure Vessels Design by Analysis
摘要
Abstract
For the pressure equipment and component subjected to complicated cyclic loads,it is very important to prevent ratcheting failure.Therefore,the corresponding assessment criteria are given in international codes around the world.Three assessment methods for this important failure mode of ratcheting are provided in the newly revised standard GB/T 4732-2024 Pressure Vessels Design by Analysis,which are based on elastic analysis,simplified elastic-plastic analysis and elastic-plastic analysis respectively.The analytical requirements and the theoretical background for revision of these three ratcheting assessment methods were interpreted and discussed in detail.Finally,based on an example,the application of the simplified elastic-plastic analysis method and the elastic-plastic method in the new standard were presented and the consistency of them in ratcheting assessment was validated with a view to providing useful reference for engineering designers to better understand the new standard.关键词
GB/T 4732-2024/分析设计/热应力棘轮/弹塑性分析/有限元分析Key words
GB/T 4732-2024/design by analysis/thermal stress ratcheting/elastic-plastic analysis/finite element analysis分类
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沈鋆,粟雨平,陈志伟,陆明万,刘应华..GB/T 4732-2024《压力容器分析设计》中棘轮评定方法的解读及应用[J].压力容器,2024,41(7):40-48,9.基金项目
低碳热力发电技术与装备全国重点实验室开放基金项目(HBC-663459) （HBC-663459）
