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Elliptical head
Elliptical head

Elliptical head

Elliptic head refers to a head composed of half elliptic shell and straight side (cylinder short section)....
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Elliptic head refers to the head composed of half elliptic shell and straight side (cylinder short section). Due to the continuous change of curvature radius of the elliptic curve, only bovine thin film stress is produced in the overall part of the elliptic shell under compression. There is a common tangent between the elliptic shell and the straight edge, so the discontinuous stress is small. The standard elliptic head with the ratio of short and long axes is equal to 2.

Elliptic head characteristics

It is composed of a half elliptic sphere and a cylindrical straight edge section. It absorbs the advantages of the good force of the hemispherical head and the shallow depth of the disc head. Because the curvature of some elliptic meridians is smooth and continuous, the stress distribution in the head is relatively uniform. The depth bt of the elliptical head depends on the ratio of the long and short axes of the elliptic head, i.e., the inner diameter of the head I): L dagger (IJ,I2h) twice the depth of the head. The smaller the ratio is, the greater the depth of the head will be. The higher the ratio is, the smaller the head depth is, and it is easy to manufacture, but the stress state is poor, and the wall thickness increases. So in general, D, the value of I2h is not greater than, right? When I),}2 is 1 2, is the standard oval head, which is a common head in pressure vessels.