External surface area of the elliptical head
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I found online that the external surface area of an elliptical head can be approximated in this way: the surface area of the head is equal to 1.66 times the area of a circular surface. Is this theory correct, and what is the theoretical basis for it?
This post was last edited by li*nji on 2015-6-19 10:08. Formula for the surface area of an elliptical head according to JB4767-2002: S=πr, where r=Di/2 and h1=H-h. For standard elliptical heads, C=0.760346. Refer to http://wenku.baidu.com/link?url=uEb-8Y9QkLYBEmsa12saoc5COAGe3KqChnkRnihBHGQwRH1MDIeANr9PN6dQZwpplhXOK2lR7eVXtv-FahKMcXb9t68Hrzj2_FLDGilvMSS
I’m not educated; I can’t do this calculation, but I know a simpler way to estimate it. Take a piece of plastic film, stick it on tightly, then peel it off and roughly estimate. Hehe.
The method is a bit clumsy, but it’s still a good approach; using formulas makes it easier!