ASME封头如何画出?

a82268569

按UG-32(d)规定,2:1的椭圆形封头为过渡区半径为0.17D和球半径为0.90D的封头,各位设计时,是直接画个标准椭圆还是按标准画,但两个圆不相切,请高手指点.谢谢.
(d) Ellipsoidal Heads With ts/L ≥ 0.002. The required
thickness of a dished head of semiellipsoidal form, in which
half the minor axis (inside depth of the head minus the
skirt) equals one-fourth of the inside diameter of the head
skirt, shall be determined by
t p PD
2SE − 0.2P
or P p 2SEt
D + 0.2t
(1)
NOTE: For ellipsoidal heads with ts /L < 0.002, the rules of 1-4(f) shall
also be met.
An acceptable approximation of a 2:1 ellipsoidal head is
one with a knuckle radius of 0.17D and a spherical radius
of 0.90D.

xinggr666

按照标准椭圆画好了

杨安腾

我们都是直接话标准椭圆的。你的图只要形状对就好了，这些规定的数值你又不会在图上注明，没必要纠结在这里吧？

zybjs2002

建议设计人员还是按比例画。