Formula for calculating the external surface area of an elliptical head

This post was last edited by pzhmotor on 2011-9-3 21:46. There are no calculation formulas (estimation formulas might be available in professional books on riveting). The calculation methods available in AUTOCAD allow for fast and accurate computations (SOLIDWORKS and similar programs are even easier for this purpose). For planar elliptical heads, a closed curve is created by using multiple line segments in a 1:1 ratio. It can be calculated directly using the “Area” function in the “Query” tool. You can also try using the ellipse tool from versions released after 2004 to draw directly, and then calculate the area. (I think it’s possible.) PS: I’ve used this trick to calculate the anti-corrosion area in engineering projects – what an efficiency! Spherical head (I have never seen elliptical spherical heads); use “multiple segments” to draw a semi-closed curve (choose a very thin thickness, such as 0.0001), and rotate it along the center line to create a 3D solid model. Using the “Area” function of the “Query” tool, the total area can be calculated directly, and then that value is divided by two. I haven’t tried it, but it should work. I’ll give it a try another day; I’ll make corrections if anything changes. PS: To find the weight of the cover, create a solid model at a 1:1 scale, determine its volume, and then multiply it by the density of the material. This method has been used to calculate the amount of acid and alkali at various elevations for horizontal cylinders and spherical-headed acid and alkali tanks, thereby helping to determine the consumption levels for the relevant teams. If the original poster is interested, they can find a picture and post it; I’ll try to do the calculations and share the method and results.

Not bad, I haven’t used it before; I’ll give it a try. If it works well, I’d be very grateful :)

There are calculations in GB25198

I have a very useful table here that you can take a look at.