废热锅炉薄管板防止塑性垮塌的安全评定  

Safety Assessment of the Thin Tubesheet for Waste Heat Boiler to Prevent Plastic Collapse

作　　者：李志强 朱惠春 张金亮 夏同伟 沈克宇 LI Zhi-qiang;ZHU Hui-chun;ZHANG Jin-liang;XIA Tong-wei;SHEN Ke-yu(Shanghai Marine Diesel Engine Research Institute,Shanghai 201108,China)

机构地区：[1]中国船舶集团有限公司第七一一研究所,上海201108

出　　处：《辽宁化工》2021年第8期1239-1242,共4页Liaoning Chemical Industry

摘　　要：为评估废热锅炉薄管板的安全性,以ASMEⅧ第2册第5篇中规定的防止塑性垮塌方法为基础,利用有限元软件ANSYS Workbench对管板进行应力分析及评定。对比了三种方法(弹性应力分析法、极限载荷法、弹-塑性应力分析法)在对薄管板进行防止塑性垮塌评定时存在的差异及各自的优势。其中极限载荷方法不仅可以避免弹性应力分析中的应力分类问题,其过程较弹-塑性应力分析法也相对简单。相比之下,极限载荷方法更适合对薄管板进行防止塑性垮塌的安全评定。With the FEA(finite element analysis)software ANSYS Workbench,the stress of the thin tubesheet of waste heat boiler was analyzed and evaluated,based on the methods to prevent plastic collapse in the standard ASMEⅧ-2 part5.The differences and advantages of the three methods(elastic stress analysis method,limit-load method,elastic-plastic stress analysis method)in evaluating the thin tubesheet were compared.The results showed that the limit-load method not only avoided the problem of stress classification in elastic stress analysis method,but also was simpler than elastic-plastic stress analysis method.In contrast,the limit-load method was more suitable for the safety assessment of thin tubesheets to prevent plastic collapse.

关 键 词：管板 防止塑性垮塌 ANSYS Workbench 应力分析 

分 类 号：TE965[石油与天然气工程—石油机械设备] TH49[机械工程—机械制造及自动化]