压力容器第41卷第2期2024年2月49收稿日期:2023-09-17修稿日期:2024-01-08基金项目:中央高校基本科研业务费自由探索项目(ZY2409)doi:10.3969/j.issn.1001-4837.2024.02.007设计计算带切向接管内压圆筒的极限承载能力计算赵晓凤,钱才富,吴志伟(北京化工大学机电学院,北京100029)摘要:针对压力容器切向接管开孔结构存在较大结构不连续性、易产生较高局部应力、目前没有适用的圆柱壳切向接管结构常规设计方法的问题,采用极限载荷分析方法,探讨不同切向接管无量纲结构参数(直径比do/Di≤0.3、径厚比Di/T≤125、厚度比t/T≤1.75)对承压圆柱壳体极限承载能力的影响,并定义了基于无接管壳体的强度削弱系数。结果表明,这3个因素都对圆柱壳切向接管结构的强度具有显著影响,当do/Di和Di/T增大、t/T减小时,强度削弱系数增大,意味着切向接管对圆柱壳的强度削弱程度增大。在大量计算结果基础上,对强度削弱系数进行回归分析,得到了回归方程,为带切向接管内压圆筒结构的强度设计提供参考。关键词:圆柱壳;切向接管;极限载荷分析;强度设计中图分类号:TH49;TH123;TQ055.8文献标志码:ALimit-load-bearingcapacitycalculationofcylindricalshellswithtangentialnozzlesunderinternalpressureZHAOXiaofeng,QIANCaifu,WUZhiwei(CollegeofMechanicalandElectricalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:Seriousstructuraldiscontinuityandhighlocalstressesexistwiththetangentialnozzleopeningstructureofpressurevessels,andtherearenoconventionaldesignmethodforthecylindricalshellswithtangentialnozzles.Thelimit-loadanalysismethodwasemployedtoinvestigatetheinfluencesofdifferentdimensionlessstructuralparameters,namelydiameterratiodo/Di≤0.3,diameter-thicknessratioDi/T≤125andthicknessratiot/T≤1.75,ontheload-bearingcapacityofthecylindricalshells,andaso-calledstrengthweakeningcoefficientwasdefinedbasedonthestrengthofthecylindricalshells.Theresultsshowthatthesethreefactorsallhaveasignificantimpactonthestrengthofthecylindricalshellwithtangentialnozzles.Specifically,whendo/DiandDi/Tincreasebutt/Tdecreases,thestrengthweakeningcoefficientincreases,whichmeansthatstrengthweakeningeffectofthetangentialnozzleon...