基于能量准则的板翅式换热器封头安定性研究  

Research on the Shakedown Analysis of the Plate-fin Heat Exchanger Header Based on Energy Criteria

作　　者：张旭 邹先平 ZHANG Xu;ZOU Xian-ping(School of Engineering,Zunyi Normal College,Guizhou Zunyi 563006,China;Gree Electric Application,Inc.of Zhuhai,Guangdong Zhuhai 519070,China)

机构地区：[1]遵义师范学院工学院,贵州遵义563000 [2]珠海格力电器股份有限公司,广东珠海579070

出　　处：《机械设计与制造》2021年第11期208-211,共4页Machinery Design & Manufacture

基　　金：基于APDL的板翅式换热器封头极限载荷数字化平台开发研究(黔科合LH字[2016]7001号)。

摘　　要：针对板翅式换热器封头在工作介质压力周期性变动下的失效问题,开展了循环内压作用下的封头结构安定性分析。建立一种基于孙阳能量判定准则的安定性分析建模及计算方法,并与厚壁圆筒安定解析解进行了比较分析,结果表明安定性分析能量法的合理性和有效性。针对不同开孔率下的安定载荷边界曲线的变化规律,拟合了安定性下限载荷计算公式,为板翅式换热器带接管-封头工程设计和安定性分析提供有益参考。To investigate the failure of the plate-fin heat exchanger header under the periodic variation of working medium pres⁃sure,an investigation on shakedown analysis method of the header under the action of cyclic internal pressure is carried out.A shakedown analysis modeling and calculation method based on SUN YANG energy criterion is established,and the calculated re⁃sults is compared with Thick walled cylinder’s analytic solutions.The results show that the shakedown analysis energy method is reasonable and effective.According to the variation law of the boundary curve of shakedown load under different opening ratio,the formula of shakedown load is fitted,which provide a useful reference for the plate-fin heat exchanger header`s engineering de⁃sign and safety assessment.

关 键 词：封头 安定下限定理 直接法 安定性分析 

分 类 号：TH16[机械工程—机械制造及自动化] TH123