球形容器管式支柱的净料展开计算就是支柱与球形容器相贯线在支柱上的展开计算。以球心 O 为原点建立空间直角坐标 OXYZ,平面 OXZ 过支柱中心线(见图1)。已知:球形容器外半径 p,管式支柱外半径 r,支柱中心线距球心 OO′=a球坐标方 The calculation of the net material expansion of the spherical container tubular pillar is the calculation of the expansion of the intersecting line between the pillar and the spherical container on the pillar. With the center of the ball O as the starting point to establish the space Cartesian coordinates OXYZ, plane OXZ over the center line of the column (see Figure 1). Known: spherical container outer radius p, tubular strut outer radius r, strut centerline from the center of the ball OO ’= a ball square