Ω环极限载荷近似计算  

Approximate calculation of limit load on Ω Ring

作　　者：朱亚军[1] 顾伯勤[1] 

机构地区：[1]南京工业大学机械工程学院,江苏南京210009

出　　处：《石油化工设备》2002年第2期27-29,共3页Petro-Chemical Equipment

基　　金：江苏省自然科学基金资助项目 (BK9912 4)

摘　　要：应用 ANSYS有限元分析软件 ,对不同材料和尺寸组合的 Ω环模型结构进行了弹塑性有限元计算 ,采用零曲率准则确定了各个模型的极限轴向力和极限内压 ,分析了极限载荷与 Ω环结构参数——环壳截面半径 a、壳体厚度 h以及环半径 R的关系 ,通过曲线拟合 ,得到了 Ω环极限载荷的近似计算公式。The stress and displacement ofΩ rings of different materials and sizes were calculated by the elastic and plastic finite element m ethod by m eans of ANSYS program .According to the zero- curvature criterion,the lim it axial load and pressure of theseΩ rings were determ ined from which the relation between the lim it load and the sizes such as the radius a,thickness h of the shell and the radius R ofΩ rings were found.The approximate form ulae of the limit load onΩ rings were derived by the regression of the FEM results.

关 键 词：ANSYS有限元分析软件 弹塑性有限元 曲线拟合 极限载荷 Ω环焊接垫片 计算 半可拆密封结构 

分 类 号：TH136[机械工程—机械制造及自动化] TQ050.3[化学工程]