EOE shaped geometry from the characteristics of view, it's a circular EOE deformation and deformation have a qualitative difference, the biggest difference is on the periphery of uneven deformation EOE. However, due to the straight edge portion and a rounded part is linked together as a whole, in the stretching process is bound to have each other's role and influence, resulting in the two parts are not simple bending.

When profiled EOE stretch, straight edge section and deformation fillet portion is completely different. But, in fact, after the tensile deformation of the mesh size shaped sidewalls EOE happened lateral compression and longitudinal elongation changes.

From this dimensional change can be seen, the transverse tensile elongation and longitudinal compression deformation distributed in the side wall portion of the straight contour of the open lid is not uniform. Therefore, in the flat blank diameter pumping radiation, not after the tensile deformation becomes equal equidistant vertical flat bottom line, but has become a large distance from the upper and lower distance small slashes.

A tensile deformation zone fillet portion required radial deformation is lower than the tensile stress of the same size cylindrical parts. When r / B = 0.5, the profiled EOE became cylinder parts, deformation difference between the above would not exist.

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