【作者】 吕龙生； 孙玥； 贺小华；

【Author】 Lv longsheng;Sun yue;He xiaohua;Nanjing Tech University,School of Mechanical and Power Engineering;

【机构】 南京工业大学机械与动力工程学院；

【摘要】 外压圆柱壳轴向斜接管结构在工程中应用广泛,研究外压圆柱壳轴向斜接管失稳临界压力可为其稳定性分析提供依据。本文采用几何/材料双非线性分析方法,分析5个无量纲参数倾角α、径厚比Do/δe、长径比L/Do、开孔率d/D、接管筒体壁厚比δet/δe对圆柱壳接管结构临界压力的影响。研究结果表明:圆柱壳轴向接管失稳临界压力仍主要取决于壳体结构的设计参数。临界压力与d/D,δ_et/δ_e及倾角α之间存在交互影响。研究结果可为外压圆柱壳轴向斜接管结构稳定性分析提供借鉴。更多还原

【Abstract】 Cylindrical shell with oblique nozzle structure under external pressure is widely used in engineering.Study on the critical buckling pressure for cylindrical shell with oblique nozzle structure can provide the basis for stability analysis.In this paper,the geometry/materials dual nonlinear analysis method were employed to analyze the effect of five dimensionless parameters（α,Do/δe,L/Do,d/D and δet/δe） on the critical pressure of cylindrical shell with oblique nozzle structure.The results show that the critical buckling pressure for cylindrical shell with oblique nozzle is still mainly depend on the design parameters of the shell structure.The interaction effect exists among the critical pressure and factor δ_et/δ_e,d/D & α.The results may provide the basis for stability analysis of cylindrical shell with oblique nozzle structure under external pressure.更多还原