钢制薄壁外压圆筒和管道临界长径比的分析

Critical Length-Radial Ratio of Steel Thin Wall External Pressure Cylinder and Pipe

对薄壁外压圆筒和管道的临界长径比进行了分析讨论 ,得到如下结论 :①区别长短圆筒和管道的临界长径比计算公式为 (L/D0 ) cr=1 18D0 /δe+ 0 45 δe/D0 ;②若L/D0 ≥ (L/D0 ) cr为长外压圆筒和管道 ,若L/D0 <(L/D0 )

Critical length-radial ratio of steel thin wall external pressure cylinder and pipe is analyzed and discussed. Conclusions: 1) the formula for distinguishing critical length-radial ratio of long and short cylinder and pipe is (L/D 0)cr=1.18 D 0/δ e+0.45δ e/D 0;2)when L/D 0≥(L/D 0) cr ,it is long external pressure cylinder and pipe, when L/D 0<(L/D 0)cr, it is short external pressure cylinder and pipe.