钢制薄壁圆筒外压试验压力的研究  

Research in external testing pressure of steel thinness wall cylinder

作　　者：韩春鸣[1] 张红卫[1] 刘岑[2] 胡成龙[1] 刘兵[1] 刘小宁[1,3] 

机构地区：[1]武汉软件工程职业学院机械制造工程系,湖北武汉430205 [2]武汉工程大学机电工程学院,湖北武汉430205 [3]武汉软件工程职业学院环境与生化工程系,湖北武汉430205

出　　处：《河北科技大学学报》2009年第4期314-318,共5页Journal of Hebei University of Science and Technology

基　　金：湖北省教育厅科研基金资助项目(B20087301);武汉市创新人才开发资金重大创新专项资助项目

摘　　要：基于随机-模糊概率模型,定量分析了钢制薄壁圆筒临界失稳强度的模糊可靠度、稳定系数与外压试验压力系数之间的关系。研究表明:1)如果要求钢制薄壁圆筒临界失稳强度的模糊可靠度范围,在外压气压试验、液压试验和正常操作时分别为0.999 709 1～0.999 999 282 2,0.998 411～0.999 183 6与0.999 999 282 2～0.999 999 998 64,可取常规稳定系数不小于2.60,外压试验压力系数的取值范围在气压试验时应不小于1.08但不大于1.16,在液压试验时应不小于1.08但不大于1.61;2)采用55组试验数据验证了文中方法的合理性。The relationship between external testing pressure coefficient and the two factors, the buckling safety factor and the fuzzy reliability range was quantitative analyzed based on the random-fuzzy probability model. The researching results show that： 1）For the fuzzy reliability range of critical strength in buckling for steel thinness wall cylinder, the range should be 0. 999 709 1-0. 999 999 282 2 under external barometrical pressure test, the range should be 0. 998 411-0. 999 183 6 under external hydraulic pressure test,and the range should be 0. 999 999 282 2-0. 999 999 998 64 during normal operation; the normal buckling safety factor should not be less than 2.60; the external testing pressure coefficient of the cylinder should not be less than 1.08 and greater than 1.16 for barometrical pressure tests,and not less than 1.08 and not greater than 1.61 for hydraulic pressure tests;2）Fifty-five group testing data proves the validity of the method.

关 键 词：钢制薄壁圆筒 临界失稳强度 模糊可靠度范围 外压试验压力系数 稳定系数 

分 类 号：TH49[机械工程—机械制造及自动化] TQ051[化学工程]