钢制薄壁外压容器的稳定安全系数  

BUCKLING SAFETY FACTOR OF STEEL THIN-WALL EXTERNAL PRESSURE VESSELS

作　　者：刘小宁[1] 韩春鸣[1] 李清[1] 

机构地区：[1]武汉软件工程职业学院,湖北武汉430205

出　　处：《石油化工设备技术》2009年第6期16-18,23+4-5,共6页Petrochemical Equipment Technology

基　　金：湖北省教育厅科研项目(B20087301);武汉市教育局重点科研项目(2008K027);武汉市创新人才开发资金重大创新专项资助项目

摘　　要：基于钢制薄壁外压容器模糊临界失稳强度的信息熵分析,建立分析稳定性模糊可靠度的模糊临界失稳强度等效随机-载荷随机的力学模型,从控制钢制薄壁外压容器稳定性在正常操作与外压压力试验时模糊可靠度的角度,对其稳定安全系数、试验压力系数与超压限制系数进行探索。研究表明:(1)从等可靠度的观点,在外压压力试验与正常操作时,薄壁外压球壳稳定性的模糊可靠度应分别不小于0.999 998 693与0.999 998 494;薄壁外压圆筒稳定性的模糊可靠度应分别不小于0.999 998 931与0.999 999 975 3。(2)薄壁外压球壳稳定安全系数应不小于14.53;薄壁外压圆筒稳定安全系数应不小于2.20。(3)薄壁外压球壳外压试验压力系数在外压压力试验时等于1.00;薄壁外压圆筒外压试验压力系数应不小于1.00但不大于1.28。(4)在外压压力试验时,薄壁外压球壳的超压限制系数应不大于0.068 8;薄壁外压圆筒的超压限制系数应不大于0.579 8。The stability fuzzy reliability,buckling safety factor,testing pressure coefficient and overpressure confining coefficient of steel thin-wall external pressure vessels during normal operation and under external pressure test were quantitatively analyzed based on the information entropy theory.The research results show that: (1) From the equal-reliability point of view,the stability fuzzy reliability of steel thin-wall external spherical vessels or heads under external pressure test and during normal operati...

关 键 词：钢制薄壁外压容器 模糊临界失稳强度 试验压力系数 超压限制系数 稳定安全系数 

分 类 号：TH49[机械工程—机械制造及自动化]