Flattening a rolled part - incorrect flat dimension?

[ProDarwin]

So I have a part that for all intensive purposes is just a 4.875" tube rolled from 0.063 5052 Aluminum. When I flatten this in solid edge (its drawn as a contour flange with a 0.001 break in it), the flat measures 15.049. The flat *should* measure 15.117. 4.875-0.063 (neutral axis) * 3.14159

The neutral factor has no effect on the flat dimension. Anyone know how I can correct this without modifying the .dxf to make the numbers correct?

 

[karmoh]

Hi,

go to contour flange options
general tab
uncheck bend relief
uncheck corner relief
set the neutral factor to 0.5

This should then give you the correct flat pattern

 

[PatCouture]

The neutral factor does have an effect on this. In the material table you should set de neutral factor of the bend equation to 0.5 and you will get a flat pattern of 15.117".

Patrick

 

[ProDarwin]

Thanks!